RHSA-2007:0155 - Security Advisory

Topic

Updated PHP packages that fix several security issues are now available for
Red Hat Enterprise Linux 3 and 4.

This update has been rated as having important security impact by the Red
Hat Security Response Team.

Description

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

A denial of service flaw was found in the way PHP processed a deeply nested
array. A remote attacker could cause the PHP interpreter to crash by
submitting an input variable with a deeply nested array. (CVE-2007-1285)

A flaw was found in the way PHP's unserialize() function processed data. If
a remote attacker was able to pass arbitrary data to PHP's unserialize()
function, they could possibly execute arbitrary code as the apache user.
(CVE-2007-1286)

A flaw was found in the way the mbstring extension set global variables. A
script which used the mb_parse_str() function to set global variables could
be forced to enable the register_globals configuration option, possibly
resulting in global variable injection. (CVE-2007-1583)

A double free flaw was found in PHP's session_decode() function. If a
remote attacker was able to pass arbitrary data to PHP's session_decode()
function, they could possibly execute arbitrary code as the apache user.
(CVE-2007-1711)

A flaw was discovered in the way PHP's mail() function processed header
data. If a script sent mail using a Subject header containing a string from
an untrusted source, a remote attacker could send bulk e-mail to unintended
recipients. (CVE-2007-1718)

A heap based buffer overflow flaw was discovered in PHP's gd extension. A
script that could be forced to process WBMP images from an untrusted source
could result in arbitrary code execution. (CVE-2007-1001)

A buffer over-read flaw was discovered in PHP's gd extension. A script that
could be forced to write arbitrary string using a JIS font from an
untrusted source could cause the PHP interpreter to crash. (CVE-2007-0455)

Users of PHP should upgrade to these updated packages which contain
backported patches to correct these issues.

Solution

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

This update is available via Red Hat Network. Details on how to use
the Red Hat Network to apply this update are available at
http://kbase.redhat.com/faq/FAQ_58_10188

Affected Products

• Red Hat Enterprise Linux Server 4 x86_64
• Red Hat Enterprise Linux Server 4 ia64
• Red Hat Enterprise Linux Server 4 i386
• Red Hat Enterprise Linux Server 3 x86_64
• Red Hat Enterprise Linux Server 3 ia64
• Red Hat Enterprise Linux Server 3 i386
• Red Hat Enterprise Linux Workstation 4 x86_64
• Red Hat Enterprise Linux Workstation 4 ia64
• Red Hat Enterprise Linux Workstation 4 i386
• Red Hat Enterprise Linux Workstation 3 x86_64
• Red Hat Enterprise Linux Workstation 3 ia64
• Red Hat Enterprise Linux Workstation 3 i386
• Red Hat Enterprise Linux Desktop 4 x86_64
• Red Hat Enterprise Linux Desktop 4 i386
• Red Hat Enterprise Linux Desktop 3 x86_64
• Red Hat Enterprise Linux Desktop 3 i386
• Red Hat Enterprise Linux for IBM z Systems 4 s390x
• Red Hat Enterprise Linux for IBM z Systems 4 s390
• Red Hat Enterprise Linux for IBM z Systems 3 s390x
• Red Hat Enterprise Linux for IBM z Systems 3 s390
• Red Hat Enterprise Linux for Power, big endian 4 ppc
• Red Hat Enterprise Linux for Power, big endian 3 ppc

Fixes

• BZ - 230556 - CVE-2007-1285 "Month of PHP Bugs" security issues (CVE-2007-1286 CVE-2007-1583 CVE-2007-1711 CVE-2007-1718)
• BZ - 235028 - CVE-2007-1001 gd php flaws (CVE-2007-0455)

CVEs

• CVE-2007-1285
• CVE-2007-1583
• CVE-2007-0455
• CVE-2007-1001
• CVE-2007-1718
• CVE-2007-1286
• CVE-2007-1711

References

• http://www.redhat.com/security/updates/classification/#important