SUSE update for samba



Published: 2021-09-22
Risk High
Patch available YES
Number of vulnerabilities 3
CVE-ID CVE-2020-27840
CVE-2021-20254
CVE-2021-20277
CWE-ID CWE-122
CWE-125
Exploitation vector Network
Public exploit N/A
Vulnerable software
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SUSE Linux Enterprise Module for Python2
Operating systems & Components / Operating system

SUSE Linux Enterprise High Availability
Operating systems & Components / Operating system

SUSE Linux Enterprise Module for Basesystem
Operating systems & Components / Operating system

ctdb-debuginfo
Operating systems & Components / Operating system package or component

ctdb
Operating systems & Components / Operating system package or component

samba-winbind-32bit-debuginfo
Operating systems & Components / Operating system package or component

samba-winbind-32bit
Operating systems & Components / Operating system package or component

samba-libs-32bit-debuginfo
Operating systems & Components / Operating system package or component

samba-libs-32bit
Operating systems & Components / Operating system package or component

libwbclient0-32bit-debuginfo
Operating systems & Components / Operating system package or component

libwbclient0-32bit
Operating systems & Components / Operating system package or component

libtevent-util0-32bit-debuginfo
Operating systems & Components / Operating system package or component

libtevent-util0-32bit
Operating systems & Components / Operating system package or component

libsmbldap2-32bit-debuginfo
Operating systems & Components / Operating system package or component

libsmbldap2-32bit
Operating systems & Components / Operating system package or component

libsmbconf0-32bit-debuginfo
Operating systems & Components / Operating system package or component

libsmbconf0-32bit
Operating systems & Components / Operating system package or component

libsamdb0-32bit-debuginfo
Operating systems & Components / Operating system package or component

libsamdb0-32bit
Operating systems & Components / Operating system package or component

libsamba-util0-32bit-debuginfo
Operating systems & Components / Operating system package or component

libsamba-util0-32bit
Operating systems & Components / Operating system package or component

libsamba-passdb0-32bit-debuginfo
Operating systems & Components / Operating system package or component

libsamba-passdb0-32bit
Operating systems & Components / Operating system package or component

libsamba-hostconfig0-32bit-debuginfo
Operating systems & Components / Operating system package or component

libsamba-hostconfig0-32bit
Operating systems & Components / Operating system package or component

libsamba-errors0-32bit-debuginfo
Operating systems & Components / Operating system package or component

libsamba-errors0-32bit
Operating systems & Components / Operating system package or component

libsamba-credentials0-32bit-debuginfo
Operating systems & Components / Operating system package or component

libsamba-credentials0-32bit
Operating systems & Components / Operating system package or component

libnetapi0-32bit-debuginfo
Operating systems & Components / Operating system package or component

libnetapi0-32bit
Operating systems & Components / Operating system package or component

libndr1-32bit-debuginfo
Operating systems & Components / Operating system package or component

libndr1-32bit
Operating systems & Components / Operating system package or component

libndr-standard0-32bit-debuginfo
Operating systems & Components / Operating system package or component

libndr-standard0-32bit
Operating systems & Components / Operating system package or component

libndr-nbt0-32bit-debuginfo
Operating systems & Components / Operating system package or component

libndr-nbt0-32bit
Operating systems & Components / Operating system package or component

libndr-krb5pac0-32bit-debuginfo
Operating systems & Components / Operating system package or component

libndr-krb5pac0-32bit
Operating systems & Components / Operating system package or component

libdcerpc0-32bit-debuginfo
Operating systems & Components / Operating system package or component

libdcerpc0-32bit
Operating systems & Components / Operating system package or component

libdcerpc-binding0-32bit-debuginfo
Operating systems & Components / Operating system package or component

libdcerpc-binding0-32bit
Operating systems & Components / Operating system package or component

samba-ceph-debuginfo
Operating systems & Components / Operating system package or component

samba-ceph
Operating systems & Components / Operating system package or component

samba-winbind-debuginfo
Operating systems & Components / Operating system package or component

samba-winbind
Operating systems & Components / Operating system package or component

samba-python3-debuginfo
Operating systems & Components / Operating system package or component

samba-python3
Operating systems & Components / Operating system package or component

samba-libs-python3-debuginfo
Operating systems & Components / Operating system package or component

samba-libs-python3
Operating systems & Components / Operating system package or component

samba-libs-debuginfo
Operating systems & Components / Operating system package or component

samba-libs
Operating systems & Components / Operating system package or component

samba-dsdb-modules-debuginfo
Operating systems & Components / Operating system package or component

samba-dsdb-modules
Operating systems & Components / Operating system package or component

samba-core-devel
Operating systems & Components / Operating system package or component

samba-client-debuginfo
Operating systems & Components / Operating system package or component

samba-client
Operating systems & Components / Operating system package or component

samba
Operating systems & Components / Operating system package or component

libwbclient0-debuginfo
Operating systems & Components / Operating system package or component

libwbclient0
Operating systems & Components / Operating system package or component

libwbclient-devel
Operating systems & Components / Operating system package or component

libtevent-util0-debuginfo
Operating systems & Components / Operating system package or component

libtevent-util0
Operating systems & Components / Operating system package or component

libtevent-util-devel
Operating systems & Components / Operating system package or component

libsmbldap2-debuginfo
Operating systems & Components / Operating system package or component

libsmbldap2
Operating systems & Components / Operating system package or component

libsmbldap-devel
Operating systems & Components / Operating system package or component

libsmbconf0-debuginfo
Operating systems & Components / Operating system package or component

libsmbconf0
Operating systems & Components / Operating system package or component

libsmbconf-devel
Operating systems & Components / Operating system package or component

libsmbclient0-debuginfo
Operating systems & Components / Operating system package or component

libsmbclient0
Operating systems & Components / Operating system package or component

libsmbclient-devel
Operating systems & Components / Operating system package or component

libsamdb0-debuginfo
Operating systems & Components / Operating system package or component

libsamdb0
Operating systems & Components / Operating system package or component

libsamdb-devel
Operating systems & Components / Operating system package or component

libsamba-util0-debuginfo
Operating systems & Components / Operating system package or component

libsamba-util0
Operating systems & Components / Operating system package or component

libsamba-util-devel
Operating systems & Components / Operating system package or component

libsamba-policy0-python3-debuginfo
Operating systems & Components / Operating system package or component

libsamba-policy0-python3
Operating systems & Components / Operating system package or component

libsamba-policy-python3-devel
Operating systems & Components / Operating system package or component

libsamba-policy-devel
Operating systems & Components / Operating system package or component

libsamba-passdb0-debuginfo
Operating systems & Components / Operating system package or component

libsamba-passdb0
Operating systems & Components / Operating system package or component

libsamba-passdb-devel
Operating systems & Components / Operating system package or component

libsamba-hostconfig0-debuginfo
Operating systems & Components / Operating system package or component

libsamba-hostconfig0
Operating systems & Components / Operating system package or component

libsamba-hostconfig-devel
Operating systems & Components / Operating system package or component

libsamba-errors0-debuginfo
Operating systems & Components / Operating system package or component

libsamba-errors0
Operating systems & Components / Operating system package or component

libsamba-errors-devel
Operating systems & Components / Operating system package or component

libsamba-credentials0-debuginfo
Operating systems & Components / Operating system package or component

libsamba-credentials0
Operating systems & Components / Operating system package or component

libsamba-credentials-devel
Operating systems & Components / Operating system package or component

libnetapi0-debuginfo
Operating systems & Components / Operating system package or component

libnetapi0
Operating systems & Components / Operating system package or component

libnetapi-devel
Operating systems & Components / Operating system package or component

libndr1-debuginfo
Operating systems & Components / Operating system package or component

libndr1
Operating systems & Components / Operating system package or component

libndr-standard0-debuginfo
Operating systems & Components / Operating system package or component

libndr-standard0
Operating systems & Components / Operating system package or component

libndr-standard-devel
Operating systems & Components / Operating system package or component

libndr-nbt0-debuginfo
Operating systems & Components / Operating system package or component

libndr-nbt0
Operating systems & Components / Operating system package or component

libndr-nbt-devel
Operating systems & Components / Operating system package or component

libndr-krb5pac0-debuginfo
Operating systems & Components / Operating system package or component

libndr-krb5pac0
Operating systems & Components / Operating system package or component

libndr-krb5pac-devel
Operating systems & Components / Operating system package or component

libndr-devel
Operating systems & Components / Operating system package or component

libdcerpc0-debuginfo
Operating systems & Components / Operating system package or component

libdcerpc0
Operating systems & Components / Operating system package or component

libdcerpc-samr0-debuginfo
Operating systems & Components / Operating system package or component

libdcerpc-samr0
Operating systems & Components / Operating system package or component

libdcerpc-samr-devel
Operating systems & Components / Operating system package or component

libdcerpc-devel
Operating systems & Components / Operating system package or component

libdcerpc-binding0-debuginfo
Operating systems & Components / Operating system package or component

libdcerpc-binding0
Operating systems & Components / Operating system package or component

samba-debugsource
Operating systems & Components / Operating system package or component

samba-debuginfo
Operating systems & Components / Operating system package or component

samba-ad-dc-debuginfo
Operating systems & Components / Operating system package or component

samba-ad-dc
Operating systems & Components / Operating system package or component

Vendor SUSE

Security Bulletin

This security bulletin contains information about 3 vulnerabilities.

1) Heap-based buffer overflow

EUVDB-ID: #VU51702

Risk: High

CVSSv3.1: 8.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-27840

CWE-ID: CWE-122 - Heap-based Buffer Overflow

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error when processing DNs inside bind requests. A remote attacker can send specially crafted LDAP request to Samba AD DC LDAP server, trigger heap-based buffer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Update the affected package samba to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Module for Python2: 15-SP3

SUSE Linux Enterprise High Availability: 15-SP3

SUSE Linux Enterprise Module for Basesystem: 15-SP3

ctdb-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

ctdb: before 4.13.6+git.211.555d60b24ba-3.7.1

samba-winbind-32bit-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

samba-winbind-32bit: before 4.13.6+git.211.555d60b24ba-3.7.1

samba-libs-32bit-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

samba-libs-32bit: before 4.13.6+git.211.555d60b24ba-3.7.1

libwbclient0-32bit-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

libwbclient0-32bit: before 4.13.6+git.211.555d60b24ba-3.7.1

libtevent-util0-32bit-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

libtevent-util0-32bit: before 4.13.6+git.211.555d60b24ba-3.7.1

libsmbldap2-32bit-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

libsmbldap2-32bit: before 4.13.6+git.211.555d60b24ba-3.7.1

libsmbconf0-32bit-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

libsmbconf0-32bit: before 4.13.6+git.211.555d60b24ba-3.7.1

libsamdb0-32bit-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

libsamdb0-32bit: before 4.13.6+git.211.555d60b24ba-3.7.1

libsamba-util0-32bit-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

libsamba-util0-32bit: before 4.13.6+git.211.555d60b24ba-3.7.1

libsamba-passdb0-32bit-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

libsamba-passdb0-32bit: before 4.13.6+git.211.555d60b24ba-3.7.1

libsamba-hostconfig0-32bit-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

libsamba-hostconfig0-32bit: before 4.13.6+git.211.555d60b24ba-3.7.1

libsamba-errors0-32bit-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

libsamba-errors0-32bit: before 4.13.6+git.211.555d60b24ba-3.7.1

libsamba-credentials0-32bit-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

libsamba-credentials0-32bit: before 4.13.6+git.211.555d60b24ba-3.7.1

libnetapi0-32bit-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

libnetapi0-32bit: before 4.13.6+git.211.555d60b24ba-3.7.1

libndr1-32bit-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

libndr1-32bit: before 4.13.6+git.211.555d60b24ba-3.7.1

libndr-standard0-32bit-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

libndr-standard0-32bit: before 4.13.6+git.211.555d60b24ba-3.7.1

libndr-nbt0-32bit-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

libndr-nbt0-32bit: before 4.13.6+git.211.555d60b24ba-3.7.1

libndr-krb5pac0-32bit-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

libndr-krb5pac0-32bit: before 4.13.6+git.211.555d60b24ba-3.7.1

libdcerpc0-32bit-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

libdcerpc0-32bit: before 4.13.6+git.211.555d60b24ba-3.7.1

libdcerpc-binding0-32bit-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

libdcerpc-binding0-32bit: before 4.13.6+git.211.555d60b24ba-3.7.1

samba-ceph-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

samba-ceph: before 4.13.6+git.211.555d60b24ba-3.7.1

samba-winbind-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

samba-winbind: before 4.13.6+git.211.555d60b24ba-3.7.1

samba-python3-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

samba-python3: before 4.13.6+git.211.555d60b24ba-3.7.1

samba-libs-python3-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

samba-libs-python3: before 4.13.6+git.211.555d60b24ba-3.7.1

samba-libs-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

samba-libs: before 4.13.6+git.211.555d60b24ba-3.7.1

samba-dsdb-modules-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

samba-dsdb-modules: before 4.13.6+git.211.555d60b24ba-3.7.1

samba-core-devel: before 4.13.6+git.211.555d60b24ba-3.7.1

samba-client-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

samba-client: before 4.13.6+git.211.555d60b24ba-3.7.1

samba: before 4.13.6+git.211.555d60b24ba-3.7.1

libwbclient0-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

libwbclient0: before 4.13.6+git.211.555d60b24ba-3.7.1

libwbclient-devel: before 4.13.6+git.211.555d60b24ba-3.7.1

libtevent-util0-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

libtevent-util0: before 4.13.6+git.211.555d60b24ba-3.7.1

libtevent-util-devel: before 4.13.6+git.211.555d60b24ba-3.7.1

libsmbldap2-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

libsmbldap2: before 4.13.6+git.211.555d60b24ba-3.7.1

libsmbldap-devel: before 4.13.6+git.211.555d60b24ba-3.7.1

libsmbconf0-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

libsmbconf0: before 4.13.6+git.211.555d60b24ba-3.7.1

libsmbconf-devel: before 4.13.6+git.211.555d60b24ba-3.7.1

libsmbclient0-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

libsmbclient0: before 4.13.6+git.211.555d60b24ba-3.7.1

libsmbclient-devel: before 4.13.6+git.211.555d60b24ba-3.7.1

libsamdb0-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

libsamdb0: before 4.13.6+git.211.555d60b24ba-3.7.1

libsamdb-devel: before 4.13.6+git.211.555d60b24ba-3.7.1

libsamba-util0-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

libsamba-util0: before 4.13.6+git.211.555d60b24ba-3.7.1

libsamba-util-devel: before 4.13.6+git.211.555d60b24ba-3.7.1

libsamba-policy0-python3-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

libsamba-policy0-python3: before 4.13.6+git.211.555d60b24ba-3.7.1

libsamba-policy-python3-devel: before 4.13.6+git.211.555d60b24ba-3.7.1

libsamba-policy-devel: before 4.13.6+git.211.555d60b24ba-3.7.1

libsamba-passdb0-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

libsamba-passdb0: before 4.13.6+git.211.555d60b24ba-3.7.1

libsamba-passdb-devel: before 4.13.6+git.211.555d60b24ba-3.7.1

libsamba-hostconfig0-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

libsamba-hostconfig0: before 4.13.6+git.211.555d60b24ba-3.7.1

libsamba-hostconfig-devel: before 4.13.6+git.211.555d60b24ba-3.7.1

libsamba-errors0-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

libsamba-errors0: before 4.13.6+git.211.555d60b24ba-3.7.1

libsamba-errors-devel: before 4.13.6+git.211.555d60b24ba-3.7.1

libsamba-credentials0-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

libsamba-credentials0: before 4.13.6+git.211.555d60b24ba-3.7.1

libsamba-credentials-devel: before 4.13.6+git.211.555d60b24ba-3.7.1

libnetapi0-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

libnetapi0: before 4.13.6+git.211.555d60b24ba-3.7.1

libnetapi-devel: before 4.13.6+git.211.555d60b24ba-3.7.1

libndr1-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

libndr1: before 4.13.6+git.211.555d60b24ba-3.7.1

libndr-standard0-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

libndr-standard0: before 4.13.6+git.211.555d60b24ba-3.7.1

libndr-standard-devel: before 4.13.6+git.211.555d60b24ba-3.7.1

libndr-nbt0-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

libndr-nbt0: before 4.13.6+git.211.555d60b24ba-3.7.1

libndr-nbt-devel: before 4.13.6+git.211.555d60b24ba-3.7.1

libndr-krb5pac0-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

libndr-krb5pac0: before 4.13.6+git.211.555d60b24ba-3.7.1

libndr-krb5pac-devel: before 4.13.6+git.211.555d60b24ba-3.7.1

libndr-devel: before 4.13.6+git.211.555d60b24ba-3.7.1

libdcerpc0-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

libdcerpc0: before 4.13.6+git.211.555d60b24ba-3.7.1

libdcerpc-samr0-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

libdcerpc-samr0: before 4.13.6+git.211.555d60b24ba-3.7.1

libdcerpc-samr-devel: before 4.13.6+git.211.555d60b24ba-3.7.1

libdcerpc-devel: before 4.13.6+git.211.555d60b24ba-3.7.1

libdcerpc-binding0-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

libdcerpc-binding0: before 4.13.6+git.211.555d60b24ba-3.7.1

samba-debugsource: before 4.13.6+git.211.555d60b24ba-3.7.1

samba-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

samba-ad-dc-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

samba-ad-dc: before 4.13.6+git.211.555d60b24ba-3.7.1

External links

http://www.suse.com/support/update/announcement/2021/suse-su-20213187-1/


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) Out-of-bounds read

EUVDB-ID: #VU52748

Risk: Medium

CVSSv3.1: 4 [CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-20254

CWE-ID: CWE-125 - Out-of-bounds read

Exploit availability: No

Description

The vulnerability allows a remote user to gain access to potentially sensitive information.

The vulnerability exists due to a boundary condition when mapping Windows group identities (SIDs) into unix group identities (gids), which resulted into negative idmap cache entries created in the Samba server process token. An attacker who can manage to trigger the vulnerability can crash the Samba server or potentially perform unauthorized actions on the system.

Mitigation

Update the affected package samba to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Module for Python2: 15-SP3

SUSE Linux Enterprise High Availability: 15-SP3

SUSE Linux Enterprise Module for Basesystem: 15-SP3

ctdb-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

ctdb: before 4.13.6+git.211.555d60b24ba-3.7.1

samba-winbind-32bit-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

samba-winbind-32bit: before 4.13.6+git.211.555d60b24ba-3.7.1

samba-libs-32bit-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

samba-libs-32bit: before 4.13.6+git.211.555d60b24ba-3.7.1

libwbclient0-32bit-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

libwbclient0-32bit: before 4.13.6+git.211.555d60b24ba-3.7.1

libtevent-util0-32bit-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

libtevent-util0-32bit: before 4.13.6+git.211.555d60b24ba-3.7.1

libsmbldap2-32bit-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

libsmbldap2-32bit: before 4.13.6+git.211.555d60b24ba-3.7.1

libsmbconf0-32bit-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

libsmbconf0-32bit: before 4.13.6+git.211.555d60b24ba-3.7.1

libsamdb0-32bit-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

libsamdb0-32bit: before 4.13.6+git.211.555d60b24ba-3.7.1

libsamba-util0-32bit-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

libsamba-util0-32bit: before 4.13.6+git.211.555d60b24ba-3.7.1

libsamba-passdb0-32bit-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

libsamba-passdb0-32bit: before 4.13.6+git.211.555d60b24ba-3.7.1

libsamba-hostconfig0-32bit-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

libsamba-hostconfig0-32bit: before 4.13.6+git.211.555d60b24ba-3.7.1

libsamba-errors0-32bit-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

libsamba-errors0-32bit: before 4.13.6+git.211.555d60b24ba-3.7.1

libsamba-credentials0-32bit-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

libsamba-credentials0-32bit: before 4.13.6+git.211.555d60b24ba-3.7.1

libnetapi0-32bit-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

libnetapi0-32bit: before 4.13.6+git.211.555d60b24ba-3.7.1

libndr1-32bit-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

libndr1-32bit: before 4.13.6+git.211.555d60b24ba-3.7.1

libndr-standard0-32bit-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

libndr-standard0-32bit: before 4.13.6+git.211.555d60b24ba-3.7.1

libndr-nbt0-32bit-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

libndr-nbt0-32bit: before 4.13.6+git.211.555d60b24ba-3.7.1

libndr-krb5pac0-32bit-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

libndr-krb5pac0-32bit: before 4.13.6+git.211.555d60b24ba-3.7.1

libdcerpc0-32bit-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

libdcerpc0-32bit: before 4.13.6+git.211.555d60b24ba-3.7.1

libdcerpc-binding0-32bit-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

libdcerpc-binding0-32bit: before 4.13.6+git.211.555d60b24ba-3.7.1

samba-ceph-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

samba-ceph: before 4.13.6+git.211.555d60b24ba-3.7.1

samba-winbind-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

samba-winbind: before 4.13.6+git.211.555d60b24ba-3.7.1

samba-python3-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

samba-python3: before 4.13.6+git.211.555d60b24ba-3.7.1

samba-libs-python3-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

samba-libs-python3: before 4.13.6+git.211.555d60b24ba-3.7.1

samba-libs-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

samba-libs: before 4.13.6+git.211.555d60b24ba-3.7.1

samba-dsdb-modules-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

samba-dsdb-modules: before 4.13.6+git.211.555d60b24ba-3.7.1

samba-core-devel: before 4.13.6+git.211.555d60b24ba-3.7.1

samba-client-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

samba-client: before 4.13.6+git.211.555d60b24ba-3.7.1

samba: before 4.13.6+git.211.555d60b24ba-3.7.1

libwbclient0-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

libwbclient0: before 4.13.6+git.211.555d60b24ba-3.7.1

libwbclient-devel: before 4.13.6+git.211.555d60b24ba-3.7.1

libtevent-util0-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

libtevent-util0: before 4.13.6+git.211.555d60b24ba-3.7.1

libtevent-util-devel: before 4.13.6+git.211.555d60b24ba-3.7.1

libsmbldap2-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

libsmbldap2: before 4.13.6+git.211.555d60b24ba-3.7.1

libsmbldap-devel: before 4.13.6+git.211.555d60b24ba-3.7.1

libsmbconf0-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

libsmbconf0: before 4.13.6+git.211.555d60b24ba-3.7.1

libsmbconf-devel: before 4.13.6+git.211.555d60b24ba-3.7.1

libsmbclient0-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

libsmbclient0: before 4.13.6+git.211.555d60b24ba-3.7.1

libsmbclient-devel: before 4.13.6+git.211.555d60b24ba-3.7.1

libsamdb0-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

libsamdb0: before 4.13.6+git.211.555d60b24ba-3.7.1

libsamdb-devel: before 4.13.6+git.211.555d60b24ba-3.7.1

libsamba-util0-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

libsamba-util0: before 4.13.6+git.211.555d60b24ba-3.7.1

libsamba-util-devel: before 4.13.6+git.211.555d60b24ba-3.7.1

libsamba-policy0-python3-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

libsamba-policy0-python3: before 4.13.6+git.211.555d60b24ba-3.7.1

libsamba-policy-python3-devel: before 4.13.6+git.211.555d60b24ba-3.7.1

libsamba-policy-devel: before 4.13.6+git.211.555d60b24ba-3.7.1

libsamba-passdb0-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

libsamba-passdb0: before 4.13.6+git.211.555d60b24ba-3.7.1

libsamba-passdb-devel: before 4.13.6+git.211.555d60b24ba-3.7.1

libsamba-hostconfig0-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

libsamba-hostconfig0: before 4.13.6+git.211.555d60b24ba-3.7.1

libsamba-hostconfig-devel: before 4.13.6+git.211.555d60b24ba-3.7.1

libsamba-errors0-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

libsamba-errors0: before 4.13.6+git.211.555d60b24ba-3.7.1

libsamba-errors-devel: before 4.13.6+git.211.555d60b24ba-3.7.1

libsamba-credentials0-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

libsamba-credentials0: before 4.13.6+git.211.555d60b24ba-3.7.1

libsamba-credentials-devel: before 4.13.6+git.211.555d60b24ba-3.7.1

libnetapi0-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

libnetapi0: before 4.13.6+git.211.555d60b24ba-3.7.1

libnetapi-devel: before 4.13.6+git.211.555d60b24ba-3.7.1

libndr1-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

libndr1: before 4.13.6+git.211.555d60b24ba-3.7.1

libndr-standard0-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

libndr-standard0: before 4.13.6+git.211.555d60b24ba-3.7.1

libndr-standard-devel: before 4.13.6+git.211.555d60b24ba-3.7.1

libndr-nbt0-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

libndr-nbt0: before 4.13.6+git.211.555d60b24ba-3.7.1

libndr-nbt-devel: before 4.13.6+git.211.555d60b24ba-3.7.1

libndr-krb5pac0-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

libndr-krb5pac0: before 4.13.6+git.211.555d60b24ba-3.7.1

libndr-krb5pac-devel: before 4.13.6+git.211.555d60b24ba-3.7.1

libndr-devel: before 4.13.6+git.211.555d60b24ba-3.7.1

libdcerpc0-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

libdcerpc0: before 4.13.6+git.211.555d60b24ba-3.7.1

libdcerpc-samr0-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

libdcerpc-samr0: before 4.13.6+git.211.555d60b24ba-3.7.1

libdcerpc-samr-devel: before 4.13.6+git.211.555d60b24ba-3.7.1

libdcerpc-devel: before 4.13.6+git.211.555d60b24ba-3.7.1

libdcerpc-binding0-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

libdcerpc-binding0: before 4.13.6+git.211.555d60b24ba-3.7.1

samba-debugsource: before 4.13.6+git.211.555d60b24ba-3.7.1

samba-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

samba-ad-dc-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

samba-ad-dc: before 4.13.6+git.211.555d60b24ba-3.7.1

External links

http://www.suse.com/support/update/announcement/2021/suse-su-20213187-1/


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the local network (LAN).

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

3) Out-of-bounds read

EUVDB-ID: #VU51701

Risk: Medium

CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-20277

CWE-ID: CWE-125 - Out-of-bounds read

Exploit availability: No

Description

The vulnerability allows a remote user to perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary condition in ldb_handler_fold() function when processing multiple consecutive leading spaces within LDAP query. A remote user can send a specially crafted LDAP query, trigger out-of-bounds read error and crash the LDAP server.

Mitigation

Update the affected package samba to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Module for Python2: 15-SP3

SUSE Linux Enterprise High Availability: 15-SP3

SUSE Linux Enterprise Module for Basesystem: 15-SP3

ctdb-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

ctdb: before 4.13.6+git.211.555d60b24ba-3.7.1

samba-winbind-32bit-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

samba-winbind-32bit: before 4.13.6+git.211.555d60b24ba-3.7.1

samba-libs-32bit-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

samba-libs-32bit: before 4.13.6+git.211.555d60b24ba-3.7.1

libwbclient0-32bit-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

libwbclient0-32bit: before 4.13.6+git.211.555d60b24ba-3.7.1

libtevent-util0-32bit-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

libtevent-util0-32bit: before 4.13.6+git.211.555d60b24ba-3.7.1

libsmbldap2-32bit-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

libsmbldap2-32bit: before 4.13.6+git.211.555d60b24ba-3.7.1

libsmbconf0-32bit-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

libsmbconf0-32bit: before 4.13.6+git.211.555d60b24ba-3.7.1

libsamdb0-32bit-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

libsamdb0-32bit: before 4.13.6+git.211.555d60b24ba-3.7.1

libsamba-util0-32bit-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

libsamba-util0-32bit: before 4.13.6+git.211.555d60b24ba-3.7.1

libsamba-passdb0-32bit-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

libsamba-passdb0-32bit: before 4.13.6+git.211.555d60b24ba-3.7.1

libsamba-hostconfig0-32bit-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

libsamba-hostconfig0-32bit: before 4.13.6+git.211.555d60b24ba-3.7.1

libsamba-errors0-32bit-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

libsamba-errors0-32bit: before 4.13.6+git.211.555d60b24ba-3.7.1

libsamba-credentials0-32bit-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

libsamba-credentials0-32bit: before 4.13.6+git.211.555d60b24ba-3.7.1

libnetapi0-32bit-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

libnetapi0-32bit: before 4.13.6+git.211.555d60b24ba-3.7.1

libndr1-32bit-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

libndr1-32bit: before 4.13.6+git.211.555d60b24ba-3.7.1

libndr-standard0-32bit-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

libndr-standard0-32bit: before 4.13.6+git.211.555d60b24ba-3.7.1

libndr-nbt0-32bit-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

libndr-nbt0-32bit: before 4.13.6+git.211.555d60b24ba-3.7.1

libndr-krb5pac0-32bit-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

libndr-krb5pac0-32bit: before 4.13.6+git.211.555d60b24ba-3.7.1

libdcerpc0-32bit-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

libdcerpc0-32bit: before 4.13.6+git.211.555d60b24ba-3.7.1

libdcerpc-binding0-32bit-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

libdcerpc-binding0-32bit: before 4.13.6+git.211.555d60b24ba-3.7.1

samba-ceph-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

samba-ceph: before 4.13.6+git.211.555d60b24ba-3.7.1

samba-winbind-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

samba-winbind: before 4.13.6+git.211.555d60b24ba-3.7.1

samba-python3-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

samba-python3: before 4.13.6+git.211.555d60b24ba-3.7.1

samba-libs-python3-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

samba-libs-python3: before 4.13.6+git.211.555d60b24ba-3.7.1

samba-libs-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

samba-libs: before 4.13.6+git.211.555d60b24ba-3.7.1

samba-dsdb-modules-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

samba-dsdb-modules: before 4.13.6+git.211.555d60b24ba-3.7.1

samba-core-devel: before 4.13.6+git.211.555d60b24ba-3.7.1

samba-client-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

samba-client: before 4.13.6+git.211.555d60b24ba-3.7.1

samba: before 4.13.6+git.211.555d60b24ba-3.7.1

libwbclient0-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

libwbclient0: before 4.13.6+git.211.555d60b24ba-3.7.1

libwbclient-devel: before 4.13.6+git.211.555d60b24ba-3.7.1

libtevent-util0-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

libtevent-util0: before 4.13.6+git.211.555d60b24ba-3.7.1

libtevent-util-devel: before 4.13.6+git.211.555d60b24ba-3.7.1

libsmbldap2-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

libsmbldap2: before 4.13.6+git.211.555d60b24ba-3.7.1

libsmbldap-devel: before 4.13.6+git.211.555d60b24ba-3.7.1

libsmbconf0-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

libsmbconf0: before 4.13.6+git.211.555d60b24ba-3.7.1

libsmbconf-devel: before 4.13.6+git.211.555d60b24ba-3.7.1

libsmbclient0-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

libsmbclient0: before 4.13.6+git.211.555d60b24ba-3.7.1

libsmbclient-devel: before 4.13.6+git.211.555d60b24ba-3.7.1

libsamdb0-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

libsamdb0: before 4.13.6+git.211.555d60b24ba-3.7.1

libsamdb-devel: before 4.13.6+git.211.555d60b24ba-3.7.1

libsamba-util0-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

libsamba-util0: before 4.13.6+git.211.555d60b24ba-3.7.1

libsamba-util-devel: before 4.13.6+git.211.555d60b24ba-3.7.1

libsamba-policy0-python3-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

libsamba-policy0-python3: before 4.13.6+git.211.555d60b24ba-3.7.1

libsamba-policy-python3-devel: before 4.13.6+git.211.555d60b24ba-3.7.1

libsamba-policy-devel: before 4.13.6+git.211.555d60b24ba-3.7.1

libsamba-passdb0-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

libsamba-passdb0: before 4.13.6+git.211.555d60b24ba-3.7.1

libsamba-passdb-devel: before 4.13.6+git.211.555d60b24ba-3.7.1

libsamba-hostconfig0-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

libsamba-hostconfig0: before 4.13.6+git.211.555d60b24ba-3.7.1

libsamba-hostconfig-devel: before 4.13.6+git.211.555d60b24ba-3.7.1

libsamba-errors0-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

libsamba-errors0: before 4.13.6+git.211.555d60b24ba-3.7.1

libsamba-errors-devel: before 4.13.6+git.211.555d60b24ba-3.7.1

libsamba-credentials0-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

libsamba-credentials0: before 4.13.6+git.211.555d60b24ba-3.7.1

libsamba-credentials-devel: before 4.13.6+git.211.555d60b24ba-3.7.1

libnetapi0-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

libnetapi0: before 4.13.6+git.211.555d60b24ba-3.7.1

libnetapi-devel: before 4.13.6+git.211.555d60b24ba-3.7.1

libndr1-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

libndr1: before 4.13.6+git.211.555d60b24ba-3.7.1

libndr-standard0-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

libndr-standard0: before 4.13.6+git.211.555d60b24ba-3.7.1

libndr-standard-devel: before 4.13.6+git.211.555d60b24ba-3.7.1

libndr-nbt0-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

libndr-nbt0: before 4.13.6+git.211.555d60b24ba-3.7.1

libndr-nbt-devel: before 4.13.6+git.211.555d60b24ba-3.7.1

libndr-krb5pac0-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

libndr-krb5pac0: before 4.13.6+git.211.555d60b24ba-3.7.1

libndr-krb5pac-devel: before 4.13.6+git.211.555d60b24ba-3.7.1

libndr-devel: before 4.13.6+git.211.555d60b24ba-3.7.1

libdcerpc0-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

libdcerpc0: before 4.13.6+git.211.555d60b24ba-3.7.1

libdcerpc-samr0-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

libdcerpc-samr0: before 4.13.6+git.211.555d60b24ba-3.7.1

libdcerpc-samr-devel: before 4.13.6+git.211.555d60b24ba-3.7.1

libdcerpc-devel: before 4.13.6+git.211.555d60b24ba-3.7.1

libdcerpc-binding0-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

libdcerpc-binding0: before 4.13.6+git.211.555d60b24ba-3.7.1

samba-debugsource: before 4.13.6+git.211.555d60b24ba-3.7.1

samba-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

samba-ad-dc-debuginfo: before 4.13.6+git.211.555d60b24ba-3.7.1

samba-ad-dc: before 4.13.6+git.211.555d60b24ba-3.7.1

External links

http://www.suse.com/support/update/announcement/2021/suse-su-20213187-1/


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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