RHSA-2014:1327 - Security Advisory

Topic

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.

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.

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

Affected Products

• Red Hat Enterprise Linux Server 7 x86_64
• Red Hat Enterprise Linux for x86_64 - Extended Update Support 7.7 x86_64
• Red Hat Enterprise Linux for x86_64 - Extended Update Support 7.6 x86_64
• Red Hat Enterprise Linux for x86_64 - Extended Update Support 7.5 x86_64
• Red Hat Enterprise Linux for x86_64 - Extended Update Support 7.4 x86_64
• Red Hat Enterprise Linux for x86_64 - Extended Update Support 7.3 x86_64
• Red Hat Enterprise Linux Server - AUS 7.6 x86_64
• Red Hat Enterprise Linux Server - Extended Life Cycle Support 7 x86_64
• Red Hat Enterprise Linux Workstation 7 x86_64
• Red Hat Enterprise Linux Desktop 7 x86_64
• Red Hat Enterprise Linux for IBM z Systems 7 s390x
• Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 7.6 s390x
• Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 7.5 s390x
• Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 7.4 s390x
• Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 7.3 s390x
• Red Hat Enterprise Linux for Power, big endian 7 ppc64
• Red Hat Enterprise Linux for Power, big endian - Extended Update Support 7.7 ppc64
• Red Hat Enterprise Linux for Power, big endian - Extended Update Support 7.6 ppc64
• Red Hat Enterprise Linux for Power, big endian - Extended Update Support 7.5 ppc64
• Red Hat Enterprise Linux for Power, big endian - Extended Update Support 7.4 ppc64
• Red Hat Enterprise Linux for Power, big endian - Extended Update Support 7.3 ppc64
• Red Hat Enterprise Linux for Scientific Computing 7 x86_64
• Red Hat Enterprise Linux Server from RHUI 7 x86_64
• Red Hat Enterprise Linux Server - AUS 7.7 x86_64
• Red Hat Enterprise Linux Server - AUS 7.4 x86_64
• Red Hat Enterprise Linux Server - AUS 7.3 x86_64
• Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 7.7 s390x
• Red Hat Enterprise Linux Server - TUS 7.7 x86_64
• Red Hat Enterprise Linux Server - TUS 7.6 x86_64
• Red Hat Enterprise Linux Server - TUS 7.3 x86_64
• Red Hat Enterprise Linux Server - Extended Life Cycle Support (for IBM z Systems) 7 s390x
• Red Hat Enterprise Linux EUS Compute Node 7.7 x86_64
• Red Hat Enterprise Linux EUS Compute Node 7.6 x86_64
• Red Hat Enterprise Linux EUS Compute Node 7.5 x86_64
• Red Hat Enterprise Linux EUS Compute Node 7.4 x86_64
• Red Hat Enterprise Linux EUS Compute Node 7.3 x86_64
• Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions 7.7 x86_64
• Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions 7.6 x86_64
• Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions 7.4 x86_64
• Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions 7.3 x86_64
• Red Hat Enterprise Linux Server - Extended Life Cycle Support for IBM Power, big endian 7 ppc64

Fixes

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

CVEs

• CVE-2014-4698
• CVE-2014-2497
• CVE-2014-3587
• CVE-2014-3597
• CVE-2014-4670
• CVE-2014-5120
• CVE-2014-3538
• CVE-2014-3478

References

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