Red Hat Product Errata RHSA-2007:0088 - Security Advisory
Issued:
2007-02-22
Updated:
2007-02-22

RHSA-2007:0088 - Security Advisory

Synopsis

Important: php security update

Type/Severity

Security Advisory: Important

Topic

Updated PHP packages that fix several security issues are now available for
Red Hat Application Stack v1.1.

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 number of buffer overflow flaws were found in the PHP session extension;
the str_replace() function; and the imap_mail_compose() function. If very
long strings were passed to the str_replace() function, an integer overflow
could occur in memory allocation. If a script used the imap_mail_compose()
function to create a new MIME message based on an input body from an
untrusted source, it could result in a heap overflow. An attacker with
access to a PHP application affected by any these issues could trigger the
flaws and possibly execute arbitrary code as the 'apache' user.
(CVE-2007-0906)

When unserializing untrusted data on 64-bit platforms, the zend_hash_init()
function could be forced into an infinite loop, consuming CPU resources for
a limited time, until the script timeout alarm aborted execution of the
script. (CVE-2007-0988)

If the wddx extension was used to import WDDX data from an untrusted
source, certain WDDX input packets could expose a random portion of heap
memory. (CVE-2007-0908)

If the odbc_result_all() function was used to display data from a database,
and the database table contents were under an attacker's control, a format
string vulnerability was possible which could allow arbitrary code
execution. (CVE-2007-0909)

A one byte memory read always occurs before the beginning of a buffer. This
could be triggered, for example, by any use of the header() function in a
script. However it is unlikely that this would have any effect.
(CVE-2007-0907)

Several flaws in PHP could allow attackers to "clobber" certain
super-global variables via unspecified vectors. (CVE-2007-0910)

Red Hat would like to thank Stefan Esser for his help diagnosing these issues.

Solution

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

To update all RPMs for your particular architecture, run:

rpm -Fvh [filenames]

where [filenames] is a list of the RPMs you wish to upgrade. Only those
RPMs which are currently installed will be updated. Those RPMs which are
not installed but included in the list will not be updated. Note that you
can also use wildcards (*.rpm) if your current directory *only* contains the
desired RPMs.

Please note that this update is also available via Red Hat Network. Many
people find this an easier way to apply updates. To use Red Hat Network,
launch the Red Hat Update Agent with the following command:

up2date

This will start an interactive process that will result in the appropriate
RPMs being upgraded on your system.

Affected Products

  • Red Hat Application Stack 1 1 x86_64
  • Red Hat Application Stack 1 1 i386

Fixes

  • BZ - 229337 - CVE-2007-0906 PHP security issues (CVE-2007-0907, CVE-2007-0908, CVE-2007-0909, CVE-2007-0910, CVE-2007-0988)

The Red Hat security contact is secalert@redhat.com. More contact details at https://access.redhat.com/security/team/contact/.