openEuler 24.03 LTS SP1 update for libxml2

1) Integer overflow

EUVDB-ID: #VU111225

Risk: High

CVSSv4.0: 8.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2025-6021

CWE-ID: CWE-190 - Integer overflow

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to integer overflow within the xmlBuildQName() function in tree.c . A remote attacker can pass specially crafted data to the application, trigger an integer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

openEuler: 24.03 LTS SP1

libxml2-help: before 2.11.9-4

python3-libxml2: before 2.11.9-4

libxml2-devel: before 2.11.9-4

libxml2-debugsource: before 2.11.9-4

libxml2-debuginfo: before 2.11.9-4

libxml2: before 2.11.9-4

CPE2.3

• cpe:2.3:o:openeuler:openeuler:24.03:LTS SP1:*:*:*:*:*:*
• cpe:2.3:a:openeuler:libxml2-help:*:*:*:*:*:openeuler:*:*
• cpe:2.3:a:openeuler:python3-libxml2:*:*:*:*:*:openeuler:*:*
• cpe:2.3:a:openeuler:libxml2-devel:*:*:*:*:*:openeuler:*:*
• cpe:2.3:a:openeuler:libxml2-debugsource:*:*:*:*:*:openeuler:*:*
• cpe:2.3:a:openeuler:libxml2-debuginfo:*:*:*:*:*:openeuler:*:*
• cpe:2.3:a:openeuler:libxml2:*:*:*:*:*:openeuler:*:*

External links

https://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2025-1701

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.