A new security update has been released for Gentoo Linux - nginx: Remote execution of arbitrary code. Here the announcement:
Gentoo Linux Security Advisory GLSA 200909-18
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http://security.gentoo.org/
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Severity: High
Title: nginx: Remote execution of arbitrary code
Date: September 18, 2009
Bugs: #285162
ID: 200909-18
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Synopsis
========
A buffer underflow vulnerability in the request URI processing of nginx
might enable remote attackers to execute arbitrary code or cause a
Denial of Service.
Background
==========
nginx is a robust, small and high performance HTTP and reverse proxy
server.
Affected packages
=================
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 www-servers/nginx < 0.7.62 *>= 0.5.38
*>= 0.6.39
>= 0.7.62
Description
===========
Chris Ries reported a heap-based buffer underflow in the
ngx_http_parse_complex_uri() function in http/ngx_http_parse.c when
parsing the request URI.
Impact
======
A remote attacker might send a specially crafted request URI to a nginx
server, possibly resulting in the remote execution of arbitrary code
with the privileges of the user running the server, or a Denial of
Service. NOTE: By default, nginx runs as the "nginx" user.
Workaround
==========
There is no known workaround at this time.
Resolution
==========
All nginx 0.5.x users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose =www-servers/nginx-0.5.38
All nginx 0.6.x users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose =www-servers/nginx-0.6.39
All nginx 0.7.x users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose =www-servers/nginx-0.7.62
References
==========
[ 1 ] CVE-2009-2629
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-2629
Availability
============
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
http://security.gentoo.org/glsa/glsa-200909-18.xml
Concerns?
=========
Security is a primary focus of Gentoo Linux and ensuring the
confidentiality and security of our users machines is of utmost
importance to us. Any security concerns should be addressed to
security@gentoo.org or alternatively, you may file a bug at
https://bugs.gentoo.org.
License
=======
Copyright 2009 Gentoo Foundation, Inc; referenced text
belongs to its owner(s).
The contents of this document are licensed under the
Creative Commons - Attribution / Share Alike license.
http://creativecommons.org/licenses/by-sa/2.5
