openEuler update for samba

Published: 2022-12-24

Risk	High
Patch available	YES
Number of vulnerabilities	1
CVE-ID	CVE-2022-44640
CWE-ID	CWE-119
Exploitation vector	Network
Public exploit	N/A
Vulnerable software Subscribe	openEuler Operating systems & Components / Operating system samba-vfs-glusterfs Operating systems & Components / Operating system package or component samba-pidl Operating systems & Components / Operating system package or component python3-samba Operating systems & Components / Operating system package or component libsmbclient 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-devel Operating systems & Components / Operating system package or component python3-samba-test Operating systems & Components / Operating system package or component ctdb-tests Operating systems & Components / Operating system package or component samba-help Operating systems & Components / Operating system package or component samba-libs Operating systems & Components / Operating system package or component samba-debuginfo Operating systems & Components / Operating system package or component samba-krb5-printing Operating systems & Components / Operating system package or component samba-dc-provision Operating systems & Components / Operating system package or component python3-samba-dc Operating systems & Components / Operating system package or component samba-common Operating systems & Components / Operating system package or component libsmbclient-devel Operating systems & Components / Operating system package or component samba-winbind-modules Operating systems & Components / Operating system package or component samba-winbind-krb5-locator Operating systems & Components / Operating system package or component libwbclient-devel Operating systems & Components / Operating system package or component samba-dc Operating systems & Components / Operating system package or component samba-client Operating systems & Components / Operating system package or component libwbclient Operating systems & Components / Operating system package or component samba-common-tools Operating systems & Components / Operating system package or component samba-test Operating systems & Components / Operating system package or component samba-dc-bind-dlz Operating systems & Components / Operating system package or component samba-debugsource Operating systems & Components / Operating system package or component ctdb Operating systems & Components / Operating system package or component samba Operating systems & Components / Operating system package or component
Vendor	openEuler

Security Bulletin

This security bulletin contains one high risk vulnerability.

1) Buffer overflow

EUVDB-ID: #VU69364

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-2022-44640

CWE-ID: CWE-119 - Memory corruption

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 in ASN.1 codec in Heimdal. The ASN.1 compiler generates code that allows specially crafted DER encodings of CHOICEs to invoke the wrong free function on the decoded structure upon decode error. This is known to impact the Heimdal KDC, leading to an invalid free() of an address partly or wholly under the control of the attacker. A remote attacker can execute arbitrary code on the system.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

openEuler: 20.03 LTS SP1 - 22.03 LTS

samba-vfs-glusterfs: before 4.11.12-23

samba-pidl: before 4.11.12-23

python3-samba: before 4.11.12-23

libsmbclient: before 4.11.12-23

samba-winbind-clients: before 4.11.12-23

samba-winbind: before 4.11.12-23

samba-devel: before 4.11.12-23

python3-samba-test: before 4.11.12-23

ctdb-tests: before 4.11.12-23

samba-help: before 4.11.12-23

samba-libs: before 4.11.12-23

samba-debuginfo: before 4.11.12-23

samba-krb5-printing: before 4.11.12-23

samba-dc-provision: before 4.11.12-23

python3-samba-dc: before 4.11.12-23

samba-common: before 4.11.12-23

libsmbclient-devel: before 4.11.12-23

samba-winbind-modules: before 4.11.12-23

samba-winbind-krb5-locator: before 4.11.12-23

libwbclient-devel: before 4.11.12-23

samba-dc: before 4.11.12-23

samba-client: before 4.11.12-23

libwbclient: before 4.11.12-23

samba-common-tools: before 4.11.12-23

samba-test: before 4.11.12-23

samba-dc-bind-dlz: before 4.11.12-23

samba-debugsource: before 4.11.12-23

ctdb: before 4.11.12-23

samba: before 4.11.12-23

External links

http://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2022-2153

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.