RHSA-2005:099 - Security Advisory

Topic

An updated Squirrelmail package that fixes several security issues is now
available for Red Hat Enterprise Linux 4.

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

Description

SquirrelMail is a standards-based webmail package written in PHP4.

Jimmy Conner discovered a missing variable initialization in Squirrelmail.
This flaw could allow potential insecure file inclusions on servers where
the PHP setting "register_globals" is set to "On". This is not a default or
recommended setting. The Common Vulnerabilities and Exposures project
(cve.mitre.org) has assigned the name CAN-2005-0075 to this issue.

A URL sanitisation bug was found in Squirrelmail. This flaw could allow a
cross site scripting attack when loading the URL for the sidebar. The
Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned
the name CAN-2005-0103 to this issue.

A missing variable initialization bug was found in Squirrelmail. This flaw
could allow a cross site scripting attack. The Common Vulnerabilities and
Exposures project (cve.mitre.org) has assigned the name CAN-2005-0104 to
this issue.

Users of Squirrelmail are advised to upgrade to this updated package,
which contains 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. Use Red Hat
Network to download and update your packages. To launch the Red Hat
Update Agent, use the following command:

up2date

For information on how to install packages manually, refer to the
following Web page for the System Administration or Customization
guide specific to your system:

http://www.redhat.com/docs/manuals/enterprise/

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 Workstation 4 x86_64
• Red Hat Enterprise Linux Workstation 4 ia64
• Red Hat Enterprise Linux Workstation 4 i386
• Red Hat Enterprise Linux Desktop 4 x86_64
• Red Hat Enterprise Linux Desktop 4 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 Power, big endian 4 ppc

Fixes

• BZ - 145387 - CAN-2005-0075 Arbitrary code injection in Squirrelmail
• BZ - 145967 - CAN-2005-0103 Multiple issues in squirrelmail (CAN-2005-0104)

CVEs

• CVE-2005-0075
• CVE-2005-0103
• CVE-2005-0104

References

• http://www.squirrelmail.org/security/issue/2005-01-20
• http://www.squirrelmail.org/security/issue/2005-01-19
• http://www.squirrelmail.org/security/issue/2005-01-14
• http://www.php.net/register_globals