10 - RHSA-2016:0457

Problem Description:

Updated rh-php56-php packages that fix multiple security issues are now available for Red Hat Software Collections.

Red Hat Product Security has rated this update as having Moderate security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section.

2. Relevant releases/architectures:

Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 6) - x86_64 Red Hat Software Collections for Red Hat Enterprise Linux Server (v. 7) - x86_64 Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 6.6) - x86_64 Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 6.7) - x86_64 Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.1) - x86_64 Red Hat Software Collections for Red Hat Enterprise Linux Server EUS (v. 7.2) - x86_64 Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 6) - x86_64 Red Hat Software Collections for Red Hat Enterprise Linux Workstation (v. 7) - x86_64

3. Description:

PHP is an HTML-embedded scripting language commonly used with the Apache HTTP Server.

Multiple flaws were discovered in the way PHP performed object unserialization. Specially crafted input processed by the unserialize() function could cause a PHP application to crash or, possibly, execute arbitrary code. (CVE-2015-6831, CVE-2015-6832, CVE-2015-6834, CVE-2015-6835, CVE-2015-6836)

Multiple flaws were found in the way the way PHP's Phar extension parsed Phar archives. A specially crafted archive could cause PHP to crash or, possibly, execute arbitrary code when opened. (CVE-2015-5589, CVE-2015-5590, CVE-2015-6833, CVE-2015-7803, CVE-2015-7804)

Two NULL pointer dereference flaws were found in the XSLTProcessor class in PHP. An attacker could use these flaws to cause a PHP application to crash if it performed Extensible Stylesheet Language (XSL) transformations using untrusted XSLT files and allowed the use of PHP functions to be used as XSLT functions within XSL stylesheets. (CVE-2015-6837, CVE-2015-6838)

All rh-php56-php users are advised to upgrade to these updated packages, which contain backported patches to correct these issues. After installing the updated packages, the httpd24-httpd service must be restarted for the update to take effect.

4. Solution:

Before applying this update, make sure all previously released errata relevant to your system have been applied.

For details on how to apply this update, refer to:

https://access.redhat.com/articles/11258

5. Bugs fixed (https://bugzilla.redhat.com/):

1245236 - CVE-2015-5589 php: segmentation fault in Phar::convertToData on invalid file 1245242 - CVE-2015-5590 php: buffer overflow and stack smashing error in phar_fix_filepath 1256290 - CVE-2015-6831 php: Use After Free Vulnerability in unserialize() 1256322 - CVE-2015-6832 php: dangling pointer in the unserialization of ArrayObject items 1260642 - CVE-2015-6834 php: multiple unserialization use-after-free issues 1260647 - CVE-2015-6835 php: use-after-free vulnerability in session deserializer 1260683 - CVE-2015-6836 php: SOAP serialize_function_call() type confusion 1260711 - CVE-2015-6837 CVE-2015-6838 php: NULL pointer dereference in XSLTProcessor class 1271081 - CVE-2015-7803 php: NULL pointer dereference in phar_get_fp_offset() 1271088 - CVE-2015-7804 php: uninitialized pointer in phar_make_dirstream() 1283702 - CVE-2015-6833 php: Files from archive can be extracted outside of destination directory using phar