RHSA-2016:0457 - Security Advisory

Topic

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.

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.

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

Affected Products

• Red Hat Software Collections (for RHEL Server) 1 for RHEL 7.7 x86_64
• Red Hat Software Collections (for RHEL Server) 1 for RHEL 7.6 x86_64
• Red Hat Software Collections (for RHEL Server) 1 for RHEL 7.5 x86_64
• Red Hat Software Collections (for RHEL Server) 1 for RHEL 7.4 x86_64
• Red Hat Software Collections (for RHEL Server) 1 for RHEL 7.3 x86_64
• Red Hat Software Collections (for RHEL Server) 1 for RHEL 7.2 x86_64
• Red Hat Software Collections (for RHEL Server) 1 for RHEL 7.1 x86_64
• Red Hat Software Collections (for RHEL Server) 1 for RHEL 7 x86_64
• Red Hat Software Collections (for RHEL Server) 1 for RHEL 6.7 x86_64
• Red Hat Software Collections (for RHEL Server) 1 for RHEL 6.6 x86_64
• Red Hat Software Collections (for RHEL Server) 1 for RHEL 6 x86_64
• Red Hat Software Collections (for RHEL Workstation) 1 for RHEL 7 x86_64
• Red Hat Software Collections (for RHEL Workstation) 1 for RHEL 6 x86_64
• Red Hat Software Collections (for RHEL Server) from RHUI 1 for RHEL 7 x86_64
• Red Hat Software Collections (for RHEL Server) from RHUI 1 for RHEL 6 x86_64

Fixes

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

CVEs

• CVE-2015-7803
• CVE-2015-6836
• CVE-2015-7804
• CVE-2015-6831
• CVE-2015-6832
• CVE-2015-6833
• CVE-2015-6834
• CVE-2015-6835
• CVE-2015-5590
• CVE-2015-6837
• CVE-2015-6838
• CVE-2015-5589

References

• https://access.redhat.com/security/updates/classification/#moderate