nginx: User-assisted execution of arbitrary code

1. Gentoo Linux Security Advisory

Advisory Reference	GLSA 201206-07 / nginx
Release Date	June 21, 2012
Latest Revision	June 21, 2012: 1
Impact	normal
Exploitable	remote

Package	Vulnerable versions	Unaffected versions	Architecture(s)
www-servers/nginx	< 1.0.15	>= 1.0.15	All supported architectures

Related bugreports: #411751

Synopsis

A buffer overflow vulnerability in nginx could result in the execution of arbitrary code.

2. Impact Information

Background

nginx is a robust, small, and high performance HTTP and reverse proxy server.

Description

An error in ngx_http_mp4_module.c could cause a buffer overflow.

NOTE: nginx must have been emerged with USE="nginx_modules_http_mp4" in order to be affected by this vulnerability.

Impact

A remote attacker could entice a user to place a specially crafted MP4 file on the nginx server, possibly resulting in execution of arbitrary code with the privileges of the process or a Denial of Service condition.

3. Resolution Information

Workaround

There is no known workaround at this time.

Resolution

All nginx users should upgrade to the latest version:

Code Listing 3.1: Resolution

  # emerge --sync
  # emerge --ask --oneshot --verbose ">=www-servers/nginx-1.0.15"

4. References

CVE-2012-2089

Page updated June 21, 2012

Summary: This is a Gentoo Linux Security Advisory

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