php security update

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

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

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

A response-splitting issue was discovered in the PHP session handling. If
a remote attacker can force a carefully crafted session identifier to be
used, a cross-site-scripting or response-splitting attack could be
possible. (CVE-2006-3016)

A buffer overflow was discovered in the PHP sscanf() function. If a script
used the sscanf() function with positional arguments in the format string,
a remote attacker sending a carefully crafted request could execute
arbitrary code as the 'apache' user. (CVE-2006-4020)

An integer overflow was discovered in the PHP wordwrap() and str_repeat()
functions. If a script running on a 64-bit server used either of these
functions on untrusted user data, a remote attacker sending a carefully
crafted request might be able to cause a heap overflow. (CVE-2006-4482)

A buffer overflow was discovered in the PHP gd extension. If a script was
set up to process GIF images from untrusted sources using the gd extension,
a remote attacker could cause a heap overflow. (CVE-2006-4484)

An integer overflow was discovered in the PHP memory allocation handling.
On 64-bit platforms, the "memory_limit" setting was not enforced correctly,
which could allow a denial of service attack by a remote user. (CVE-2006-4486)

Users of PHP should upgrade to these updated packages which contain
backported patches to correct these issues. These packages also contain a
fix for a bug where certain input strings to the metaphone() function could
cause memory corruption.

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

This update is available via Red Hat Network. 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.

201766 - CVE-2006-4020 PHP buffer overread flaw
204993 - CVE-2006-4482 PHP heap overflow
205714 - metaphone() function causing Apache segfaults
206664 - CVE-2006-4486 PHP integer overflows in Zend
206956 - CVE-2006-4484 PHP heap overflow in LWZReadByte
206959 - CVE-2006-3016 PHP session ID validation

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-3016
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-4020
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-4482
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-4484
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-4486
http://www.redhat.com/security/updates/classification/#moderate