CVE-2011-4362
Description
Integer signedness error in the base64_decode function in the HTTP authentication functionality (http_auth.c) in lighttpd 1.4 before 1.4.30 and 1.5 before SVN revision 2806 allows remote attackers to cause a denial of service (segmentation fault) via crafted base64 input that triggers an out-of-bounds read with a negative index.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
Exploits
Public proof-of-concept code below. AS-IS, for defenders and authorised testing only.
Exploit-DB
OS impact
Debian Mixed 8 releases
| Version | Status | Fixed in |
|---|---|---|
| trixie | Fixed | 1.4.30-1 |
| sid | Fixed | 1.4.30-1 |
| forky | Fixed | 1.4.30-1 |
| bullseye | Fixed | 1.4.30-1 |
| bookworm | Fixed | 1.4.30-1 |
| 7.0 | Affected | — |
| 6.0 | Affected | — |
| 5.0 | Affected | — |
References
- http://archives.neohapsis.com/archives/bugtraq/2011-12/0167.html
- http://blog.pi3.com.pl/?p=277
- http://download.lighttpd.net/lighttpd/security/lighttpd_sa_2011_01.txt
- http://jvn.jp/en/jp/JVN37417423/index.html
- http://redmine.lighttpd.net/issues/2370
- http://secunia.com/advisories/47260
- http://www.debian.org/security/2011/dsa-2368
- http://www.exploit-db.com/exploits/18295
- http://www.openwall.com/lists/oss-security/2011/11/29/13
- http://www.openwall.com/lists/oss-security/2011/11/29/8
- http://www.securitytracker.com/id?1026359
- https://bugzilla.redhat.com/show_bug.cgi?id=758624
- https://exchange.xforce.ibmcloud.com/vulnerabilities/71536
- https://security-tracker.debian.org/tracker/CVE-2011-4362
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.