CVE-2010-2547

Severity: high (CVSS 8.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 5.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2010-08-05 · updated 2026-06-16
Weakness: CWE-416

Description

Use-after-free vulnerability in kbx/keybox-blob.c in GPGSM in GnuPG 2.x through 2.0.16 allows remote attackers to 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.

Affected products

Debian Linux: 5.0
Fedoraproject Fedora: 13
GnuPG: from 2.0.0 through 2.0.16

References

http://lists.fedoraproject.org/pipermail/package-announce/2010-August/044935.html
http://lists.gnupg.org/pipermail/gnupg-announce/2010q3/000302.html
http://lists.opensuse.org/opensuse-security-announce/2010-11/msg00001.html
http://secunia.com/advisories/38877
http://secunia.com/advisories/40718
http://secunia.com/advisories/40841
http://slackware.com/security/viewer.php?l=slackware-security&y=2010&m=slackware-security.462008
http://wiki.rpath.com/wiki/Advisories:rPSA-2010-0076
http://www.debian.org/security/2010/dsa-2076
http://www.mandriva.com/security/advisories?name=MDVSA-2010:143
http://www.securityfocus.com/bid/41945
http://www.securitytracker.com/id?1024247

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