National Cyber Awareness System

Vulnerability Summary for CVE-2011-4362

Overview

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.

Impact

CVSS Severity (version 2.0):

CVSS Version 2 Metrics:

References to Advisories, Solutions, and Tools

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External Source: CONFIRM

Name: https://bugzilla.redhat.com/show_bug.cgi?id=758624

Hyperlink:https://bugzilla.redhat.com/show_bug.cgi?id=758624

External Source: XF

Name: lighttpd-base64-dos(71536)

Hyperlink:http://xforce.iss.net/xforce/xfdb/71536

External Source: SECTRACK

Name: 1026359

Hyperlink:http://www.securitytracker.com/id?1026359

External Source: MLIST

Name: [oss-security] 20111129 CVE Request: lighttpd/mod_auth out-of-bounds read due to signedness error

Hyperlink:http://www.openwall.com/lists/oss-security/2011/11/29/8

External Source: MLIST

Name: [oss-security] 20111129 Re: CVE Request: lighttpd/mod_auth out-of-bounds read due to signedness error

Hyperlink:http://www.openwall.com/lists/oss-security/2011/11/29/13

External Source: EXPLOIT-DB

Name: 18295

Hyperlink:http://www.exploit-db.com/exploits/18295

External Source: DEBIAN

Name: DSA-2368

Hyperlink:http://www.debian.org/security/2011/dsa-2368

External Source: SECUNIA

Name: 47260

Type: Advisory

Hyperlink:http://secunia.com/advisories/47260

External Source: CONFIRM

Name: http://redmine.lighttpd.net/issues/2370

Hyperlink:http://redmine.lighttpd.net/issues/2370

External Source: CONFIRM

Name: http://download.lighttpd.net/lighttpd/security/lighttpd_sa_2011_01.txt

Hyperlink:http://download.lighttpd.net/lighttpd/security/lighttpd_sa_2011_01.txt

External Source: MISC

Name: http://blog.pi3.com.pl/?p=277

Hyperlink:http://blog.pi3.com.pl/?p=277

External Source: BUGTRAQ

Name: 20111224 Lighttpd Proof of Concept code for CVE-2011-4362

Hyperlink:http://archives.neohapsis.com/archives/bugtraq/2011-12/0167.html