#VU33958 Input validation error in lighttpd - CVE-2011-4362
Published: December 24, 2011 / Updated: August 4, 2020
Vulnerability identifier: #VU33958
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/U:Green
CVE-ID: CVE-2011-4362
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
Public exploit is available
Vulnerable software:
lighttpd
lighttpd
Software vendor:
lighttpd
lighttpd
Description
The vulnerability allows a remote non-authenticated attacker to perform service disruption.
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
Install update from vendor's website.
External links
- http://archives.neohapsis.com/archives/bugtraq/2011-12/0167.html
- http://blog.pi3.com.pl/?p=277
- http://download.lighttpd.net/lighttpd/security/lighttpd_sa_2011_01.txt
- http://redmine.lighttpd.net/issues/2370
- http://secunia.com/advisories/47260
- http://www.debian.org/security/2011/dsa-2368
- http://www.exploit-db.com/exploits/18295
- http://www.openwall.com/lists/oss-security/2011/11/29/13
- http://www.openwall.com/lists/oss-security/2011/11/29/8
- http://www.securitytracker.com/id?1026359
- https://bugzilla.redhat.com/show_bug.cgi?id=758624
- https://exchange.xforce.ibmcloud.com/vulnerabilities/71536