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[ GLSA 200709-16 ] Lighttpd: Buffer overflow
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GLSA
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PostPosted: Thu Sep 27, 2007 9:26 pm    Post subject: [ GLSA 200709-16 ] Lighttpd: Buffer overflow Reply with quote

Gentoo Linux Security Advisory

Title: Lighttpd: Buffer overflow (GLSA 200709-16)
Severity: high
Exploitable: remote
Date: September 27, 2007
Bug(s): #191912
ID: 200709-16

Synopsis


Lighttpd is vulnerable to the remote execution of arbitrary code.


Background


Lighttpd is a lightweight HTTP web server.


Affected Packages

Package: www-servers/lighttpd
Vulnerable: < 1.4.18
Unaffected: >= 1.4.18
Architectures: All supported architectures


Description


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.


Impact


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.


Workaround


Edit the file /etc/lighttpd/lighttpd.conf and comment the following
line: "include mod_fastcgi.conf"


Resolution


All Lighttpd users should upgrade to the latest version:
Code:
# emerge --sync
    # emerge --ask --oneshot --verbose ">=www-servers/lighttpd-1.4.18"


References

CVE-2007-4727


Last edited by GLSA on Sat Aug 23, 2014 4:24 am; edited 2 times in total
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