Anolis OS update for tigervnc

1) Use-after-free

EUVDB-ID: #VU71991

Risk: Low

CVSSv4.0: 7.4 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:U/U:Clear]

CVE-ID: CVE-2023-0494

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a use-after-free error within DeepCopyPointerClasses. A local user can trigger a use-after-free error and execute arbitrary code with elevated privileges.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

Anolis OS: 8

tigervnc-selinux: before 1.12.0-9

tigervnc-license: before 1.12.0-9

tigervnc-icons: before 1.12.0-9

tigervnc-server-module: before 1.12.0-9

tigervnc-server-minimal: before 1.12.0-9

tigervnc-server: before 1.12.0-9

tigervnc: before 1.12.0-9

CPE2.3

• cpe:2.3:o:openanolis:anolis_os:8:*:*:*:*:*:*:*
• cpe:2.3:o:openanolis:tigervnc-selinux:*:*:*:*:*:anolis_os:*:*
• cpe:2.3:o:openanolis:tigervnc-license:*:*:*:*:*:anolis_os:*:*
• cpe:2.3:o:openanolis:tigervnc-icons:*:*:*:*:*:anolis_os:*:*
• cpe:2.3:o:openanolis:tigervnc-server-module:*:*:*:*:*:anolis_os:*:*
• cpe:2.3:o:openanolis:tigervnc-server-minimal:*:*:*:*:*:anolis_os:*:*
• cpe:2.3:o:openanolis:tigervnc-server:*:*:*:*:*:anolis_os:*:*
• cpe:2.3:o:openanolis:tigervnc:*:*:*:*:*:anolis_os:*:*

External links

https://anas.openanolis.cn/errata/detail/ANSA-2023:0031

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

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