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CVE-2011-4362

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…

Published Dec 24, 2011lighttpdEPSS 21.11%

Overview

CVE-2011-4362 is a medium-severity vulnerability affecting lighttpd lighttpd. It was published on December 24, 2011 and has a CVSS 2.0 base score of 5.0 (MEDIUM).

This vulnerability has a CVSS 2.0 base score of 5.0, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories and patches from lighttpd. Update lighttpd to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected products

VendorProductVersionsStatus
lighttpdlighttpd>= 1.4.1, < 1.4.30Affected

References

Refarchives.neohapsis.com/archives/bugtraq/2011-12/0167.htmlRefblog.pi3.com.pl/?p=277Refdownload.lighttpd.net/lighttpd/security/lighttpd_sa_2011_01.txtRefjvn.jp/en/jp/JVN37417423/index.htmlRefredmine.lighttpd.net/issues/2370Refsecunia.com/advisories/47260Refwww.debian.org/security/2011/dsa-2368Refwww.exploit-db.com/exploits/18295Refwww.openwall.com/lists/oss-security/2011/11/29/13Refwww.openwall.com/lists/oss-security/2011/11/29/8

How CyberStrike helps

Frequently asked questions

What is CVE-2011-4362?

CVE-2011-4362 is a medium-severity vulnerability affecting lighttpd lighttpd. It was published on December 24, 2011 and has a CVSS 2.0 base score of 5.0 (MEDIUM).

How severe is CVE-2011-4362?

This vulnerability has a CVSS 2.0 base score of 5.0, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2011-4362?

Check the references section for vendor advisories and patches from lighttpd. Update lighttpd to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2011-4362?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2011-4362 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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