6.8 - RHSA-2014:1327

Problem Description:

Updated php packages that fix multiple security issues are now available for Red Hat Enterprise Linux 7.

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 Enterprise Linux Client Optional (v. 7) - x86_64 Red Hat Enterprise Linux ComputeNode Optional (v. 7) - x86_64 Red Hat Enterprise Linux Server (v. 7) - ppc64, s390x, x86_64 Red Hat Enterprise Linux Server Optional (v. 7) - ppc64, s390x, x86_64 Red Hat Enterprise Linux Workstation (v. 7) - x86_64 Red Hat Enterprise Linux Workstation Optional (v. 7) - x86_64

3. Description:

PHP is an HTML-embedded scripting language commonly used with the Apache HTTP Server. PHP's fileinfo module provides functions used to identify a particular file according to the type of data contained by the file.

A buffer overflow flaw was found in the way the File Information (fileinfo) extension processed certain Pascal strings. A remote attacker able to make a PHP application using fileinfo convert a specially crafted Pascal string provided by an image file could cause that application to crash. (CVE-2014-3478)

Multiple flaws were found in the File Information (fileinfo) extension regular expression rules for detecting various files. A remote attacker could use either of these flaws to cause a PHP application using fileinfo to consume an excessive amount of CPU. (CVE-2014-3538)

It was found that the fix for CVE-2012-1571 was incomplete; the File Information (fileinfo) extension did not correctly parse certain Composite Document Format (CDF) files. A remote attacker could use this flaw to crash a PHP application using fileinfo via a specially crafted CDF file. (CVE-2014-3587)

It was found that PHP's gd extension did not properly handle file names with a null character. A remote attacker could possibly use this flaw to make a PHP application access unexpected files and bypass intended file system access restrictions. (CVE-2014-5120)

A NULL pointer dereference flaw was found in the gdImageCreateFromXpm() function of PHP's gd extension. A remote attacker could use this flaw to crash a PHP application using gd via a specially crafted X PixMap (XPM) file. (CVE-2014-2497)

Multiple buffer over-read flaws were found in the php_parserr() function of PHP. A malicious DNS server or a man-in-the-middle attacker could possibly use this flaw to execute arbitrary code as the PHP interpreter if a PHP application used the dns_get_record() function to perform a DNS query. (CVE-2014-3597)

Two use-after-free flaws were found in the way PHP handled certain Standard PHP Library (SPL) Iterators and ArrayIterators. A malicious script author could possibly use either of these flaws to disclose certain portions of server memory. (CVE-2014-4670, CVE-2014-4698)

The CVE-2014-3478 issue was discovered by Francisco Alonso of Red Hat Product Security, the CVE-2014-3538 issue was discovered by Jan Kaluža of the Red Hat Web Stack Team, and the CVE-2014-3597 issue was discovered by David Kutálek of the Red Hat BaseOS QE.

All php users are advised to upgrade to these updated packages, which contain backported patches to correct these issues. After installing the updated packages, the httpd daemon 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.

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/articles/11258

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

1076676 - CVE-2014-2497 gd: NULL pointer dereference in gdImageCreateFromXpm() 1098222 - CVE-2014-3538 file: unrestricted regular expression matching 1104863 - CVE-2014-3478 file: mconvert incorrect handling of truncated pascal string size 1120259 - CVE-2014-4698 php: ArrayIterator use-after-free due to object change during sorting 1120266 - CVE-2014-4670 php: SPL Iterators use-after-free 1128587 - CVE-2014-3587 file: incomplete fix for CVE-2012-1571 in cdf_read_property_info 1132589 - CVE-2014-3597 php: multiple buffer over-reads in php_parserr 1132793 - CVE-2014-5120 php: gd extension NUL byte injection in file names