openEuler 24.03 LTS update for gnupg2

1) Input validation error

EUVDB-ID: #VU106992

Risk: Medium

CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2025-30258

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to disable signature verification.

The vulnerability exists due to an error when handling subkey data. A remote attacker can trick the victim into importing a specially crafted certificate with subkey data that lacks a valid backsig or that has incorrect usage flags and disable signature verification for other signing keys.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

openEuler: 24.03 LTS

gnupg2-help: before 2.4.3-6

gnupg2-debugsource: before 2.4.3-6

gnupg2-debuginfo: before 2.4.3-6

gnupg2: before 2.4.3-6

CPE2.3

• cpe:2.3:o:openeuler:openeuler:24.03:LTS:*:*:*:*:*:*
• cpe:2.3:a:openeuler:gnupg2-help:*:*:*:*:*:openeuler:*:*
• cpe:2.3:a:openeuler:gnupg2-debugsource:*:*:*:*:*:openeuler:*:*
• cpe:2.3:a:openeuler:gnupg2-debuginfo:*:*:*:*:*:openeuler:*:*
• cpe:2.3:a:openeuler:gnupg2:*:*:*:*:*:openeuler:*:*

External links

https://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2025-1375

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.