SynopsisThe remote Scientific Linux host is missing a security update.
DescriptionA server-side code injection flaw was found in the SquirrelMail 'map_yp_alias' function. If SquirrelMail was configured to retrieve a user's IMAP server address from a Network Information Service (NIS) server via the 'map_yp_alias' function, an unauthenticated, remote attacker using a specially crafted username could use this flaw to execute arbitrary code with the privileges of the web server.
Multiple cross-site scripting (XSS) flaws were found in SquirrelMail.
An attacker could construct a carefully crafted URL, which once visited by an unsuspecting user, could cause the user's web browser to execute malicious script in the context of the visited SquirrelMail web page. (CVE-2009-1578)
It was discovered that SquirrelMail did not properly sanitize Cascading Style Sheets (CSS) directives used in HTML mail. A remote attacker could send a specially crafted email that could place mail content above SquirrelMail's controls, possibly allowing phishing and cross-site scripting attacks. (CVE-2009-1581)
SolutionUpdate the affected squirrelmail package.