Anolis OS update for tigervnc

1) Heap-based buffer overflow

EUVDB-ID: #VU85447

Risk: Low

CVSSv4.0: 5.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2023-6816

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

Exploit availability: No

Description

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

The vulnerability exists due to a boundary error within the DeviceFocusEvent and ProcXIQueryPointer functions. A local user can trigger a heap-based buffer overflow and execute arbitrary code on the target system.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

Anolis OS: 8

tigervnc-selinux: before 1.13.1-3

tigervnc-license: before 1.13.1-3

tigervnc-icons: before 1.13.1-3

tigervnc-server-module: before 1.13.1-3

tigervnc-server-minimal: before 1.13.1-3

tigervnc-server: before 1.13.1-3

tigervnc: before 1.13.1-3

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-2024:0412

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.