openEuler 20.03 LTS update for samba-4.11.6-7

Published: 2020-06-11

Risk	Medium
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2020-10700 CVE-2020-10704
CWE-ID	CWE-416 CWE-121
Exploitation vector	Local network
Public exploit	N/A
Vulnerable software Subscribe	openEuler Operating systems & Components / Operating system samba-winbind-modules Operating systems & Components / Operating system package or component samba-vfs-glusterfs Operating systems & Components / Operating system package or component samba-winbind-modules-4.11.6-7.oe1.aarch64.rpmctdb Operating systems & Components / Operating system package or component samba-winbind-krb5-locator Operating systems & Components / Operating system package or component samba-winbind-clients Operating systems & Components / Operating system package or component samba-winbind Operating systems & Components / Operating system package or component samba-test Operating systems & Components / Operating system package or component samba-pidl Operating systems & Components / Operating system package or component samba-libs Operating systems & Components / Operating system package or component samba-krb5-printing Operating systems & Components / Operating system package or component samba-help Operating systems & Components / Operating system package or component samba-devel 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-dc-provision Operating systems & Components / Operating system package or component samba-dc-bind-dlz Operating systems & Components / Operating system package or component samba-dc Operating systems & Components / Operating system package or component samba-common-tools Operating systems & Components / Operating system package or component samba-common 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 python3-samba-test Operating systems & Components / Operating system package or component python3-samba-dc Operating systems & Components / Operating system package or component python3-samba Operating systems & Components / Operating system package or component libwbclient-devel Operating systems & Components / Operating system package or component libwbclient Operating systems & Components / Operating system package or component libsmbclient-devel Operating systems & Components / Operating system package or component libsmbclient Operating systems & Components / Operating system package or component ctdb-tests Operating systems & Components / Operating system package or component ctdb Operating systems & Components / Operating system package or component
Vendor	openEuler

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Use-after-free

EUVDB-ID: #VU27376

Risk: Medium

CVSSv3.1: 4.2 [CVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-10700

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service attack.

The vulnerability exists due to a use-after-free error when Paged results control is combined with ASQ control while performing search operations. A remote authenticated user can send a specially crafted LDAP search query, trigger a use-after-free error and perform a denial of service attack.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

openEuler: 20.03 LTS

samba-winbind-modules: before 4.11.6-7

samba-vfs-glusterfs: before 4.11.6-7

samba-winbind-modules-4.11.6-7.oe1.aarch64.rpmctdb: before 4.11.6-7

samba-winbind-krb5-locator: before 4.11.6-7

samba-winbind-clients: before 4.11.6-7

samba-winbind: before 4.11.6-7

samba-test: before 4.11.6-7

samba-pidl: before 4.11.6-7

samba-libs: before 4.11.6-7

samba-krb5-printing: before 4.11.6-7

samba-help: before 4.11.6-7

samba-devel: before 4.11.6-7

samba-debugsource: before 4.11.6-7

samba-debuginfo: before 4.11.6-7

samba-dc-provision: before 4.11.6-7

samba-dc-bind-dlz: before 4.11.6-7

samba-dc: before 4.11.6-7

samba-common-tools: before 4.11.6-7

samba-common: before 4.11.6-7

samba-client: before 4.11.6-7

samba: before 4.11.6-7

python3-samba-test: before 4.11.6-7

python3-samba-dc: before 4.11.6-7

python3-samba: before 4.11.6-7

libwbclient-devel: before 4.11.6-7

libwbclient: before 4.11.6-7

libsmbclient-devel: before 4.11.6-7

libsmbclient: before 4.11.6-7

ctdb-tests: before 4.11.6-7

ctdb: before 4.11.6-7

External links

http://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2020-1006

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.

2) Stack-based buffer overflow

EUVDB-ID: #VU27377