Issued:

2009-05-26

Updated:

2009-05-26

RHSA-2009:1066 - Important: squirrelmail security update

Synopsis

Important: squirrelmail security update

Type/Severity

Security Advisory Important

Topic

An updated squirrelmail package that fixes multiple security issues is now available for Red Hat Enterprise Linux 3, 4, and 5.

This update has been rated as having important security impact by the Red Hat Security Response Team.

Description

SquirrelMail is a standards-based webmail package written in PHP.

A 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. (CVE-2009-1579)

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)

Users of squirrelmail should upgrade to this updated package, which contains backported patches to correct these issues.

Solution

Before applying this update, make sure that all previously-released errata relevant to your system have been applied.

This update is available via Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at This content is not included.http://kbase.redhat.com/faq/docs/DOC-11259

Affected Products

Updated Packages

• squirrelmail-1.4.8-5.el5_3.7.src.rpm
• squirrelmail-1.4.8-5.el5_3.7.noarch.rpm
• squirrelmail-1.4.8-5.el4_8.5.src.rpm
• squirrelmail-1.4.8-5.el4_8.5.noarch.rpm

Fixes

• This content is not included.BZ - 500356
• This content is not included.BZ - 500360
• This content is not included.BZ - 500363

CVEs

• CVE-2009-1579
• CVE-2009-1578
• CVE-2009-1581

References

• http://www.redhat.com/security/updates/classification/#important
• Content from www.squirrelmail.org is not included.Content from www.squirrelmail.org is not included.http://www.squirrelmail.org/security/issue/2009-05-08
• Content from www.squirrelmail.org is not included.Content from www.squirrelmail.org is not included.http://www.squirrelmail.org/security/issue/2009-05-10
• Content from www.squirrelmail.org is not included.Content from www.squirrelmail.org is not included.http://www.squirrelmail.org/security/issue/2009-05-12

Additional information

• The Red Hat security contact is This content is not included.secalert@redhat.com. More contact details at https://access.redhat.com/security/team/contact/.
• Offline Security Data data is available for integration with other systems. See Offline Security Data API to get started.