- Issued:
- 2012-05-11
- Updated:
- 2012-05-11
RHSA-2012:0570 - Security Advisory
Synopsis
Critical: php security update
Type/Severity
Security Advisory: Critical
Topic
Updated php packages that fix one security issue are now available for
Red Hat Application Stack v2.
The Red Hat Security Response Team has rated this update as having critical
security impact. A Common Vulnerability Scoring System (CVSS) base score,
which gives a detailed severity rating, is available from the CVE link in
the References section.
Description
PHP is an HTML-embedded scripting language commonly used with the Apache
HTTP Server.
A flaw was found in the way the php-cgi executable processed command line
arguments when running in CGI mode. A remote attacker could send a
specially-crafted request to a PHP script that would result in the query
string being parsed by php-cgi as command line options and arguments. This
could lead to the disclosure of the script's source code or arbitrary code
execution with the privileges of the PHP interpreter. (CVE-2012-1823)
Red Hat is aware that a public exploit for this issue is available that
allows remote code execution in affected PHP CGI configurations. This flaw
does not affect the default configuration using the PHP module for Apache
httpd to handle PHP scripts.
All php users should upgrade to these updated packages, which contain a
backported patch to resolve this issue. After installing the updated
packages, the httpd daemon must be restarted for the update to take effect.
Solution
Before applying this update, make sure all previously-released errata
relevant to your system have been applied.
This update is available via the Red Hat Network. Details on how to
use the Red Hat Network to apply this update are available at
https://access.redhat.com/knowledge/articles/11258
Affected Products
- Red Hat Application Stack 2 (for RHEL Server) 2 x86_64
- Red Hat Application Stack 2 (for RHEL Server) 2 i386
Fixes
- BZ - 818607 - CVE-2012-1823 php: command line arguments injection when run in CGI mode (VU#520827)
CVEs
The Red Hat security contact is secalert@redhat.com. More contact details at https://access.redhat.com/security/team/contact/.