RHSA-2015:1218 - Security Advisory

Topic

Updated php packages that fix multiple security issues are now available
for Red Hat Enterprise Linux 6.

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.

A flaw was found in the way PHP parsed multipart HTTP POST requests. A
specially crafted request could cause PHP to use an excessive amount of CPU
time. (CVE-2015-4024)

An uninitialized pointer use flaw was found in PHP's Exif extension. A
specially crafted JPEG or TIFF file could cause a PHP application using the
exif_read_data() function to crash or, possibly, execute arbitrary code
with the privileges of the user running that PHP application.
(CVE-2015-0232)

An integer overflow flaw leading to a heap-based buffer overflow was found
in the way PHP's FTP extension parsed file listing FTP server responses. A
malicious FTP server could use this flaw to cause a PHP application to
crash or, possibly, execute arbitrary code. (CVE-2015-4022)

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-2015-0273, CVE-2015-2787, CVE-2015-4147,
CVE-2015-4148, CVE-2015-4599, CVE-2015-4600, CVE-2015-4601, CVE-2015-4602,
CVE-2015-4603)

It was found that certain PHP functions did not properly handle file names
containing a NULL character. A remote attacker could possibly use this flaw
to make a PHP script access unexpected files and bypass intended file
system access restrictions. (CVE-2015-4026, CVE-2015-3411, CVE-2015-3412,
CVE-2015-4598)

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-2015-2301,
CVE-2015-2783, CVE-2015-3307, CVE-2015-3329, CVE-2015-4021)

A heap buffer overflow flaw was found in the enchant_broker_request_dict()
function of PHP's enchant extension. An attacker able to make a PHP
application enchant dictionaries could possibly cause it to crash.
(CVE-2014-9705)

A buffer over-read flaw was found in the GD library used by the PHP gd
extension. A specially crafted GIF file could cause a PHP application using
the imagecreatefromgif() function to crash. (CVE-2014-9709)

A double free flaw was found in zend_ts_hash_graceful_destroy() function in
the PHP ZTS module. This flaw could possibly cause a PHP application to
crash. (CVE-2014-9425)

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.

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

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

Affected Products

• Red Hat Enterprise Linux Server 6 x86_64
• Red Hat Enterprise Linux Server 6 i386
• Red Hat Enterprise Linux for x86_64 - Extended Update Support 6.6 x86_64
• Red Hat Enterprise Linux for x86_64 - Extended Update Support 6.6 i386
• Red Hat Enterprise Linux Server - AUS 6.6 x86_64
• Red Hat Enterprise Linux Workstation 6 x86_64
• Red Hat Enterprise Linux Workstation 6 i386
• Red Hat Enterprise Linux Desktop 6 x86_64
• Red Hat Enterprise Linux Desktop 6 i386
• Red Hat Enterprise Linux for IBM z Systems 6 s390x
• Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 6.6 s390x
• Red Hat Enterprise Linux for Power, big endian - Extended Update Support 6.6 ppc64
• Red Hat Enterprise Linux for Scientific Computing 6 x86_64
• Red Hat Enterprise Linux Server from RHUI 6 x86_64
• Red Hat Enterprise Linux Server from RHUI 6 i386
• Red Hat Enterprise Linux Server - Extended Update Support from RHUI 6.6 x86_64
• Red Hat Enterprise Linux Server - Extended Update Support from RHUI 6.6 i386
• Red Hat OpenShift Enterprise Application Node 2.2 x86_64
• Red Hat OpenShift Enterprise Application Node 2.1 x86_64
• Red Hat OpenShift Enterprise Application Node 2.0 x86_64
• Red Hat Enterprise Linux Server - Extended Life Cycle Support 6 x86_64
• Red Hat Enterprise Linux Server - Extended Life Cycle Support 6 i386
• Red Hat Enterprise Linux for Power, big endian 6 ppc64
• Red Hat Enterprise Linux EUS Compute Node 6.6 x86_64
• Red Hat Enterprise Linux Server - TUS 6.6 x86_64
• Red Hat Enterprise Linux Server - Extended Life Cycle Support (for IBM z Systems) 6 s390x

Fixes

• BZ - 1177734 - CVE-2014-9425 php: Double-free in zend_ts_hash_graceful_destroy()
• BZ - 1185472 - CVE-2015-0232 php: Free called on unitialized pointer in exif.c
• BZ - 1188639 - CVE-2014-9709 gd: buffer read overflow in gd_gif_in.c
• BZ - 1194730 - CVE-2015-0273 php: use after free vulnerability in unserialize() with DateTimeZone
• BZ - 1194737 - CVE-2014-9705 php: heap buffer overflow in enchant_broker_request_dict()
• BZ - 1194747 - CVE-2015-2301 php: use after free in phar_object.c
• BZ - 1204868 - CVE-2015-4147 php: SoapClient's __call() type confusion through unserialize()
• BZ - 1207676 - CVE-2015-2787 php: use-after-free vulnerability in the process_nested_data function in ext/standard/var_unserializer.re
• BZ - 1213407 - CVE-2015-3411 php: missing null byte checks for paths in various PHP extensions
• BZ - 1213446 - CVE-2015-2783 php: buffer over-read in Phar metadata parsing
• BZ - 1213449 - CVE-2015-3329 php: buffer overflow in phar_set_inode()
• BZ - 1222485 - CVE-2015-4024 php: multipart/form-data request parsing CPU usage DoS
• BZ - 1222538 - CVE-2015-4599 CVE-2015-4600 CVE-2015-4601 php: type confusion issue in unserialize() with various SOAP methods
• BZ - 1223412 - CVE-2015-4022 php: integer overflow leading to heap overflow when reading FTP file listing
• BZ - 1223422 - CVE-2015-4026 php: pcntl_exec() accepts paths with NUL character
• BZ - 1223425 - CVE-2015-4021 php: memory corruption in phar_parse_tarfile caused by empty entry file name
• BZ - 1223441 - CVE-2015-3307 php: invalid pointer free() in phar_tar_process_metadata()
• BZ - 1226916 - CVE-2015-4148 php: SoapClient's do_soap_call() type confusion after unserialize()
• BZ - 1232823 - CVE-2015-3412 php: missing null byte checks for paths in various PHP extensions
• BZ - 1232897 - CVE-2015-4598 php: missing null byte checks for paths in DOM and GD extensions
• BZ - 1232918 - CVE-2015-4603 php: exception::getTraceAsString type confusion issue after unserialize
• BZ - 1232923 - CVE-2015-4602 php: Incomplete Class unserialization type confusion

CVEs

• CVE-2015-4148
• CVE-2015-2301
• CVE-2015-2787
• CVE-2015-0232
• CVE-2014-9705
• CVE-2014-9709
• CVE-2015-4147
• CVE-2015-0273
• CVE-2015-2783
• CVE-2015-3307
• CVE-2015-3329
• CVE-2015-4602
• CVE-2015-4603
• CVE-2015-3411
• CVE-2015-3412
• CVE-2015-4599
• CVE-2015-4600
• CVE-2015-4601
• CVE-2015-4598
• CVE-2015-4026
• CVE-2015-4021
• CVE-2015-4022
• CVE-2015-4024
• CVE-2014-9425

References

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