openEuler 22.03 LTS update for libX11

1) Out-of-bounds write

EUVDB-ID: #VU77450

Risk: Medium

CVSSv4.0: 4.9 [CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2023-3138

CWE-ID: CWE-787 - Out-of-bounds write

Exploit availability: No

Description

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

The vulnerability exists due to a boundary error within src/InitExt.c in libX11. A remote attacker can send specially crafted data to the server, trigger an out-of-bounds write and perform a denial of service (DoS) attack.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

openEuler: 22.03 LTS

libX11-help: before 1.7.2-6

libX11-debugsource: before 1.7.2-7

libX11-devel: before 1.7.2-7

libX11-debuginfo: before 1.7.2-7

libX11: before 1.7.2-6

CPE2.3

• cpe:2.3:o:openeuler:openeuler:22.03:LTS:*:*:*:*:*:*
• cpe:2.3:a:openeuler:libx11-help:*:*:*:*:*:openeuler:*:*
• cpe:2.3:a:openeuler:libx11-debugsource:*:*:*:*:*:openeuler:*:*
• cpe:2.3:a:openeuler:libx11-devel:*:*:*:*:*:openeuler:*:*
• cpe:2.3:a:openeuler:libx11-debuginfo:*:*:*:*:*:openeuler:*:*
• cpe:2.3:a:openeuler:libx11:*:*:*:*:*:openeuler:*:*

External links

https://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2023-1378

Q & A

Can this vulnerability be exploited remotely?

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

Is there known malware, which exploits this vulnerability?

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