Updated squirrelmail packages are now available for Red Hat Linux.
SquirrelMail is a webmail package written in PHP. Two vulnerabilities have been found that affect SquirrelMail version 1.2.7 and earlier. Cross-site scripting vulnerabilities allow remote attackers to execute script as other web users via addressbook.php, options.php, search.php, or help.php. It is possible for remote attackers to determine the absolute pathname of the options.php script via a malformed optpage file argument, which generates an error message when the file cannot be included in the script. Red Hat Linux 8 shipped with SquirrelMail version 1.2.7 and is therefore vulnerable to these issues. All users are advised to upgrade to these errata packages containing SquirrelMail version 1.2.8 which is not vulnerable to these issues.