A new squirrelmail package that fixes a security issue as well as several
bugs is 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.
SquirrelMail is a standards-based webmail package written in PHP.
A dynamic variable evaluation flaw was found in SquirrelMail. Users who
have an account on a SquirrelMail server and are logged in could use this
flaw to overwrite variables which may allow them to read or write other
users' preferences or attachments. (CVE-2006-4019)
Users of SquirrelMail should upgrade to this erratum package, which
contains SquirrelMail 1.4.8 to correct this issue. This package also
contains a number of additional patches to correct various bugs.
Note: After installing this update, users are advised to restart their httpd
service to ensure that the new version functions correctly.