Joined: 12 May 2004
|Posted: Thu Sep 27, 2007 9:26 pm Post subject: [ GLSA 200709-16 ] Lighttpd: Buffer overflow
|Gentoo Linux Security Advisory
Title: Lighttpd: Buffer overflow (GLSA 200709-16)
Date: September 27, 2007
Lighttpd is vulnerable to the remote execution of arbitrary code.
Lighttpd is a lightweight HTTP web server.
Vulnerable: < 1.4.18
Unaffected: >= 1.4.18
Architectures: All supported architectures
Mattias Bengtsson and Philip Olausson have discovered a buffer overflow vulnerability in the function fcgi_env_add() in the file mod_fastcgi.c when processing overly long HTTP headers.
A remote attacker could send a specially crafted request to the vulnerable Lighttpd server, resulting in the remote execution of arbitrary code with privileges of the user running the web server. Note that mod_fastcgi is disabled in Gentoo's default configuration.
Edit the file /etc/lighttpd/lighttpd.conf and comment the following line: "include mod_fastcgi.conf"
All Lighttpd users should upgrade to the latest version:
|# emerge --sync
# emerge --ask --oneshot --verbose ">=www-servers/lighttpd-1.4.18"