Alerts This Week
Warning Icon 1 872
Alerts This Week
Warning Icon 1 872

Red Hat Enterprise Linux: RHSA-2012:0547-01 Critical: php53 RCE

red hat
Calendar Grey May 7, 2012
Dist Redhat Esm H88
Important revision for php53 on Red Hat Enterprise Linux aimed at resolving security vulnerabilities and mitigating the possibility of remote execution threats.
Updated php53 packages that fix one security issue are now available for Red Hat Enterprise Linux 5

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

Summary

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 php53 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.

Topics%20covered

Topics Covered

security advisory php remote code execution red hat enterprise updates critical security update cgi mode

References

https://access.redhat.com/security/cve/CVE-2012-1823 https://access.redhat.com/security/updates/classification/#critical

Package List

RHEL Desktop Workstation (v. 5 client):
Source:
i386: php53-5.3.3-7.el5_8.i386.rpm php53-bcmath-5.3.3-7.el5_8.i386.rpm php53-cli-5.3.3-7.el5_8.i386.rpm php53-common-5.3.3-7.el5_8.i386.rpm php53-dba-5.3.3-7.el5_8.i386.rpm php53-debuginfo-5.3.3-7.el5_8.i386.rpm php53-devel-5.3.3-7.el5_8.i386.rpm php53-gd-5.3.3-7.el5_8.i386.rpm php53-imap-5.3.3-7.el5_8.i386.rpm php53-intl-5.3.3-7.el5_8.i386.rpm php53-ldap-5.3.3-7.el5_8.i386.rpm php53-mbstring-5.3.3-7.el5_8.i386.rpm php53-mysql-5.3.3-7.el5_8.i386.rpm php53-odbc-5.3.3-7.el5_8.i386.rpm php53-pdo-5.3.3-7.el5_8.i386.rpm php53-pgsql-5.3.3-7.el5_8.i386.rpm php53-process-5.3.3-7.el5_8.i386.rpm php53-pspell-5.3.3-7.el5_8.i386.rpm php53-snmp-5.3.3-7.el5_8.i386.rpm php53-soap-5.3.3-7.el5_8.i386.rpm php53-xml-5.3.3-7.el5_8.i386.rpm php53-xmlrpc-5.3.3-7.el5_8.i386.rpm
x86_64: php53-5.3.3-7.el5_8.x86_64.rpm php53-bcmath-5.3.3-7.el5_8.x86_64.rpm php53-cli-5.3.3-7.el5_8.x86_64.rpm php53-common-5.3.3-7.el5_8.x86_64.rpm php53-dba-5.3.3-7.el5_8.x86_64.rpm php53-debuginfo-5.3.3-7.el5_8.x86_64.rpm php53-devel-5.3.3-7.el5_8.x86_64.rpm php53-gd-5.3.3-7.el5_8.x86_64.rpm php53-imap-5.3.3-7.el5_8.x86_64.rpm php53-intl-5.3.3-7.el5_8.x86_64.rpm php53-ldap-5.3.3-7.el5_8.x86_64.rpm php53-mbstring-5.3.3-7.el5_8.x86_64.rpm

Read the Full Advisory


Severity
critical
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2012:0547-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2012:0547.html
Issue date: 2012-05-07

Topic

Updated php53 packages that fix one security issue are now available forRed Hat Enterprise Linux 5.The Red Hat Security Response Team has rated this update as having criticalsecurity impact. A Common Vulnerability Scoring System (CVSS) base score,which gives a detailed severity rating, is available from the CVE link inthe References section.

Topics%20covered

Topics Covered

security advisory php remote code execution red hat enterprise updates critical security update cgi mode

Relevant Releases Architectures

RHEL Desktop Workstation (v. 5 client) - i386, x86_64

Red Hat Enterprise Linux (v. 5 server) - i386, ia64, ppc, s390x, x86_64

Bugs Fixed

818607 - CVE-2012-1823 php: command line arguments injection when run in CGI mode (VU#520827)

Get the latest News and Insights

Get the latest Linux and open source security news straight to your inbox.

Your message here