Synopsis
The remote Red Hat host is missing one or more security updates for squirrelmail.
Description
The remote Redhat Enterprise Linux 4 / 5 host has a package installed that is affected by multiple vulnerabilities as referenced in the RHSA-2009:0010 advisory.
SquirrelMail is an easy-to-configure, standards-based, webmail package written in PHP. It includes built-in PHP support for the IMAP and SMTP protocols, and pure HTML 4.0 page-rendering (with no JavaScript required) for maximum browser-compatibility, strong MIME support, address books, and folder manipulation.
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.
Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.
Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.
Solution
Update the RHEL squirrelmail package based on the guidance in RHSA-2009:0010.
Plugin Details
File Name: redhat-RHSA-2009-0010.nasl
Agent: unix
Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent, Nessus
Risk Information
Vendor
Vendor Severity: Moderate
Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:N/A:N
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C
Vulnerability Information
CPE: cpe:/o:redhat:enterprise_linux:5, p-cpe:/a:redhat:enterprise_linux:squirrelmail, cpe:/o:redhat:enterprise_linux:3, cpe:/o:redhat:enterprise_linux:4
Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list, Host/cpu
Exploit Ease: No known exploits are available
Patch Publication Date: 1/12/2009
Vulnerability Publication Date: 9/24/2008