CVE-2011-4362
First published: Wed Nov 30 2011(Updated: )
An signedness error, leading to out of stack-based buffer read flaw was found in the way lighttpd, a lightning fast webserver with light system requirements, processed certain invalid base64 HTTP authentication tokens. A remote attacker could provide a specially crafted HTTP authentication request, leading to denial of service (lighttpd daemon crash due to an signedness error while processing the token). Upstream bug report: [1] <a href="http://redmine.lighttpd.net/issues/2370">http://redmine.lighttpd.net/issues/2370</a> Upstream patch (with testcase and NEWS update): [2] <a href="http://redmine.lighttpd.net/projects/lighttpd/repository/revisions/2806/diff">http://redmine.lighttpd.net/projects/lighttpd/repository/revisions/2806/diff</a> References: [3] <a href="http://download.lighttpd.net/lighttpd/security/lighttpd_sa_2011_01.txt">http://download.lighttpd.net/lighttpd/security/lighttpd_sa_2011_01.txt</a> (upstream advisory) [4] <a href="http://www.openwall.com/lists/oss-security/2011/11/29/8">http://www.openwall.com/lists/oss-security/2011/11/29/8</a> (CVE request) [5] <a href="http://www.openwall.com/lists/oss-security/2011/11/29/13">http://www.openwall.com/lists/oss-security/2011/11/29/13</a> (CVE assignment)
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Fipsasp Fipscms Light | =1.5.0 | |
| Fipsasp Fipscms Light | >=1.4.1<1.4.30 | |
| Debian | =5.0 | |
| Debian | =7.0 | |
| Debian | =6.0 |
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Reference Links
- http://www.debian.org/security/2011/dsa-2368
- http://secunia.com/advisories/47260
- https://bugzilla.redhat.com/show_bug.cgi?id=758624
- http://www.securitytracker.com/id?1026359
- http://redmine.lighttpd.net/issues/2370
- http://www.openwall.com/lists/oss-security/2011/11/29/8
- http://download.lighttpd.net/lighttpd/security/lighttpd_sa_2011_01.txt
- http://www.openwall.com/lists/oss-security/2011/11/29/13
- http://blog.pi3.com.pl/?p=277
- http://archives.neohapsis.com/archives/bugtraq/2011-12/0167.html
- http://www.exploit-db.com/exploits/18295
- https://exchange.xforce.ibmcloud.com/vulnerabilities/71536
- http://jvn.jp/en/jp/JVN37417423/index.html
- http://redmine.lighttpd.net/projects/lighttpd/repository/revisions/2806/diff
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=758625
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=758626
Frequently Asked Questions
What is the severity of CVE-2011-4362?
CVE-2011-4362 is classified as a medium severity vulnerability due to the potential for remote exploitation.
How do I fix CVE-2011-4362?
To fix CVE-2011-4362, upgrade lighttpd to version 1.5.1 or later, or apply relevant patches provided by your distribution.
What effect does CVE-2011-4362 have on affected systems?
CVE-2011-4362 can lead to stack-based buffer reading, potentially allowing attackers to access sensitive information.
Which versions of lighttpd are affected by CVE-2011-4362?
CVE-2011-4362 affects lighttpd versions from 1.4.1 to 1.4.30 and 1.5.0.
Can CVE-2011-4362 be exploited remotely?
Yes, remote attackers can exploit CVE-2011-4362 by sending specially crafted HTTP authentication requests.
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