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Last updated: 2/13/2016 6:39:49 PM

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Vulnerability Summary for CVE-2011-4362

Original release date: 12/24/2011
Last revised: 11/06/2012


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 Severity (version 2.0):
CVSS v2 Base Score: 5.0 MEDIUM
Impact Subscore: 2.9
Exploitability Subscore: 10.0
CVSS Version 2 Metrics:
Access Vector: Network exploitable
Access Complexity: Low
Authentication: Not required to exploit
Impact Type: Allows disruption of service

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External Source: BUGTRAQ
Name: 20111224 Lighttpd Proof of Concept code for CVE-2011-4362
External Source: SECTRACK
Name: 1026359
External Source: EXPLOIT-DB
Name: 18295
External Source: XF
Name: lighttpd-base64-dos(71536)
External Source: MISC
Name: http://blog.pi3.com.pl/?p=277
External Source: MLIST
Name: [oss-security] 20111129 CVE Request: lighttpd/mod_auth out-of-bounds read due to signedness error
External Source: DEBIAN
Name: DSA-2368
External Source: CONFIRM
Name: http://download.lighttpd.net/lighttpd/security/lighttpd_sa_2011_01.txt
External Source: MLIST
Name: [oss-security] 20111129 Re: CVE Request: lighttpd/mod_auth out-of-bounds read due to signedness error
External Source: CONFIRM
Name: http://redmine.lighttpd.net/issues/2370
External Source: CONFIRM
Name: https://bugzilla.redhat.com/show_bug.cgi?id=758624

Vulnerable software and versions

+ Configuration 1
+ OR
* cpe:/a:lighttpd:lighttpd:1.4.18
* cpe:/a:lighttpd:lighttpd:1.4.2
* cpe:/a:lighttpd:lighttpd:1.4.3
* cpe:/a:lighttpd:lighttpd:1.4.4
* cpe:/a:lighttpd:lighttpd:1.4.5
* cpe:/a:lighttpd:lighttpd:1.4.6
* cpe:/a:lighttpd:lighttpd:1.4.7
* cpe:/a:lighttpd:lighttpd:1.4.8
* cpe:/a:lighttpd:lighttpd:1.4.9
* cpe:/a:lighttpd:lighttpd:1.4.19
* cpe:/a:lighttpd:lighttpd:1.4.17
* cpe:/a:lighttpd:lighttpd:1.4.16
* cpe:/a:lighttpd:lighttpd:1.4.15
* cpe:/a:lighttpd:lighttpd:1.4.14
* cpe:/a:lighttpd:lighttpd:1.4.13
* cpe:/a:lighttpd:lighttpd:1.4.12
* cpe:/a:lighttpd:lighttpd:1.4.11
* cpe:/a:lighttpd:lighttpd:1.4.10
* cpe:/a:lighttpd:lighttpd:1.4.0
* cpe:/a:lighttpd:lighttpd:1.3.9
* cpe:/a:lighttpd:lighttpd:1.3.8
* cpe:/a:lighttpd:lighttpd:1.3.6
* cpe:/a:lighttpd:lighttpd:1.3.5
* cpe:/a:lighttpd:lighttpd:1.3.4
* cpe:/a:lighttpd:lighttpd:1.3.3
* cpe:/a:lighttpd:lighttpd:1.3.2
* cpe:/a:lighttpd:lighttpd:1.3.16
* cpe:/a:lighttpd:lighttpd:1.3.15
* cpe:/a:lighttpd:lighttpd:1.3.14
* cpe:/a:lighttpd:lighttpd:1.3.13
* cpe:/a:lighttpd:lighttpd:1.3.12
* cpe:/a:lighttpd:lighttpd:1.3.11
* cpe:/a:lighttpd:lighttpd:1.3.10
* cpe:/a:lighttpd:lighttpd:1.3.1
* cpe:/a:lighttpd:lighttpd:1.3.0
* cpe:/a:lighttpd:lighttpd:1.2.8
* cpe:/a:lighttpd:lighttpd:1.2.7
* cpe:/a:lighttpd:lighttpd:1.2.6
* cpe:/a:lighttpd:lighttpd:1.2.5
* cpe:/a:lighttpd:lighttpd:1.2.3
* cpe:/a:lighttpd:lighttpd:1.2.2
* cpe:/a:lighttpd:lighttpd:1.2.1
* cpe:/a:lighttpd:lighttpd:1.2.0
* cpe:/a:lighttpd:lighttpd:1.1.9
* cpe:/a:lighttpd:lighttpd:1.1.8
* cpe:/a:lighttpd:lighttpd:1.1.7
* cpe:/a:lighttpd:lighttpd:1.1.6
* cpe:/a:lighttpd:lighttpd:1.1.5
* cpe:/a:lighttpd:lighttpd:1.1.4
* cpe:/a:lighttpd:lighttpd:1.1.3
* cpe:/a:lighttpd:lighttpd:1.1.2
* cpe:/a:lighttpd:lighttpd:1.1.1
* cpe:/a:lighttpd:lighttpd:1.1.0
* cpe:/a:lighttpd:lighttpd:1.0.3
* cpe:/a:lighttpd:lighttpd:1.0.2
* cpe:/a:lighttpd:lighttpd:1.4.20
* cpe:/a:lighttpd:lighttpd:1.4.21
* cpe:/a:lighttpd:lighttpd:1.4.22
* cpe:/a:lighttpd:lighttpd:1.4.23
* cpe:/a:lighttpd:lighttpd:1.4.24
* cpe:/a:lighttpd:lighttpd:1.4.25
* cpe:/a:lighttpd:lighttpd:1.5.0 and previous versions

* Denotes Vulnerable Software
Changes related to vulnerability configurations

Technical Details

Vulnerability Type (View All)