SB2011102507 - Input validation error in gnupg (Alpine package)

Description

This security bulletin contains information about 1 vulnerability.

1) Input validation error (CVE-ID: CVE-2010-2547)

CWE-ID: CWE-20 - Improper input validation

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Green

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

The vulnerability exists due to insufficient validation of user-supplied input. A remote attacker can cause a denial of service (crash) and possibly execute arbitrary code via a certificate with a large number of Subject Alternate Names, which is not properly handled in a realloc operation when importing the certificate or verifying its signature.

Remediation

Install update from vendor's website.

References

• https://git.alpinelinux.org/aports/commit/?id=d096c8b5422f5ce71bc14b9e162a169ad361e871
• https://git.alpinelinux.org/aports/commit/?id=1688dff30155eeec8819c9bb121be9bfca64a96a