Oracle Linux 3 / 4 / 5 : squirrelmail (ELSA-2009-0010)
Medium Nessus Plugin ID 67786
SynopsisThe remote Oracle Linux host is missing a security update.
DescriptionFrom Red Hat Security Advisory 2009:0010 :
An updated squirrelmail package that resolves various security issues is now available for Red Hat Enterprise Linux 3, 4 and 5.
This update has been rated as having moderate security impact by the Red Hat Security Response Team.
Ivan Markovic discovered a cross-site scripting (XSS) flaw in SquirrelMail caused by insufficient HTML mail sanitization. A remote attacker could send a specially crafted HTML mail or attachment that could cause a user's Web browser to execute a malicious script in the context of the SquirrelMail session when that email or attachment was opened by the user. (CVE-2008-2379)
It was discovered that SquirrelMail allowed cookies over insecure connections (ie did not restrict cookies to HTTPS connections). An attacker who controlled the communication channel between a user and the SquirrelMail server, or who was able to sniff the user's network communication, could use this flaw to obtain the user's session cookie, if a user made an HTTP request to the server. (CVE-2008-3663)
Note: After applying this update, all session cookies set for SquirrelMail sessions started over HTTPS connections will have the 'secure' flag set. That is, browsers will only send such cookies over an HTTPS connection. If needed, you can revert to the previous behavior by setting the configuration option '$only_secure_cookies' to 'false' in SquirrelMail's /etc/squirrelmail/config.php configuration file.
Users of squirrelmail should upgrade to this updated package, which contains backported patches to correct these issues.
SolutionUpdate the affected squirrelmail package.