RHSA-2006:0276 - Security Advisory

Topic

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.

Description

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

The phpinfo() PHP function did not properly sanitize long strings. An
attacker could use this to perform cross-site scripting attacks against
sites that have publicly-available PHP scripts that call phpinfo().
(CVE-2006-0996)

The html_entity_decode() PHP function was found to not be binary safe. An
attacker could use this flaw to disclose a certain part of the memory. In
order for this issue to be exploitable the target site would need to have a
PHP script which called the "html_entity_decode()" function with untrusted
input from the user and displayed the result. (CVE-2006-1490)

The error handling output was found to not properly escape HTML output in
certain cases. An attacker could use this flaw to perform cross-site
scripting attacks against sites where both display_errors and html_errors
are enabled. (CVE-2006-0208)

An input validation error was found in the "mb_send_mail()" function. An
attacker could use this flaw to inject arbitrary headers in a mail sent via
a script calling the "mb_send_mail()" function where the "To" parameter can
be controlled by the attacker. (CVE-2005-3883)

A buffer overflow flaw was discovered in uw-imap, the University of
Washington's IMAP Server. php-imap is compiled against the static c-client
libraries from imap and therefore needed to be recompiled against the fixed
version. This issue only affected Red Hat Enterprise Linux 3.
(CVE-2005-2933).

Users of PHP should upgrade to these updated packages, which contain
backported patches that resolve these issues.

Solution

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.

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 - 163490 - PEAR::DB autoExecute function does not work when updating with WHERE clause
• BZ - 174463 - CVE-2005-3883 PHP mb_send_mail() header parsing issue
• BZ - 174528 - CVE-2005-2933 imap buffer overflow
• BZ - 178028 - CVE-2006-0208 PHP Cross Site Scripting (XSS) flaw
• BZ - 182719 - ImageCreateFromGif does not clean up its temporary file
• BZ - 187230 - CVE-2006-1490 PHP memory disclosure issue
• BZ - 187510 - CVE-2006-0996 phpinfo() XSS issue

CVEs

• CVE-2005-2933
• CVE-2005-3883
• CVE-2006-0208
• CVE-2006-0996
• CVE-2006-1490
• CVE-2003-1303

References

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