Vulnerability 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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Lighttpd | Lighttpd | >= 1.4.1, < 1.4.30 |
| Debian | Debian Linux | 5.0 |
References
- http://archives.neohapsis.com/archives/bugtraq/2011-12/0167.htmlBroken Link
- http://blog.pi3.com.pl/?p=277ExploitThird Party Advisory
- http://download.lighttpd.net/lighttpd/security/lighttpd_sa_2011_01.txtExploitPatchVendor Advisory
- http://jvn.jp/en/jp/JVN37417423/index.htmlThird Party Advisory
- http://redmine.lighttpd.net/issues/2370ExploitPatchVendor Advisory
- http://secunia.com/advisories/47260Third Party Advisory
- http://www.debian.org/security/2011/dsa-2368Third Party Advisory
- http://www.exploit-db.com/exploits/18295ExploitThird Party AdvisoryVDB Entry
- http://www.openwall.com/lists/oss-security/2011/11/29/13ExploitMailing ListPatch
- http://www.openwall.com/lists/oss-security/2011/11/29/8ExploitMailing ListPatch
- http://www.securitytracker.com/id?1026359Third Party AdvisoryVDB Entry
- https://bugzilla.redhat.com/show_bug.cgi?id=758624Issue TrackingThird Party Advisory
- https://exchange.xforce.ibmcloud.com/vulnerabilities/71536Third Party AdvisoryVDB Entry
- http://archives.neohapsis.com/archives/bugtraq/2011-12/0167.htmlBroken Link
- http://blog.pi3.com.pl/?p=277ExploitThird Party Advisory
FAQ
What is CVE-2011-4362?
CVE-2011-4362 is a vulnerability with a CVSS score of 5.0 (MEDIUM). 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 ...
How severe is CVE-2011-4362?
CVE-2011-4362 has been rated MEDIUM with a CVSS base score of 5.0/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2011-4362?
Check the references section above for vendor advisories and patch information. Affected products include: Lighttpd Lighttpd, Debian Debian Linux.