1. Gentoo Linux Security Advisory
| Advisory Reference | GLSA 200709-16 / lighttpd |
| Release Date | September 27, 2007 |
| Latest Revision | September 27, 2007: 01 |
| Impact | high |
| Exploitable | remote |
| Package | Vulnerable versions | Unaffected versions | Architecture(s) |
| www-servers/lighttpd | < 1.4.18 | >= 1.4.18 | All supported architectures |
Related bugreports: #191912
Lighttpd is vulnerable to the remote execution of arbitrary code.
Lighttpd is a lightweight HTTP web server.
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:
Code Listing 3.1: Resolution |
# emerge --sync # emerge --ask --oneshot --verbose ">=www-servers/lighttpd-1.4.18" |