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TITLE:
SquirrelMail Multiple Vulnerabilities

SECUNIA ADVISORY ID:
SA35073

VERIFY ADVISORY:
http://secunia.com/advisories/35073/

DESCRIPTION:
Some vulnerabilities have been reported in SquirrelMail, which can be
exploited by malicious people to conduct cross-site scripting, session
fixation, and phishing attacks

1) Input passed via the URI is not properly sanitised before being
returned to the user. This can be exploited to execute arbitrary HTML
and script code in a user's browser session in context of an affected
site.

2) Input passed to contrib/decrypt_headers.php is not properly
sanitised before being returned to the user. This can be exploited to
execute arbitrary HTML and script code in a user's browser session in
context of an affected site.

3) An error in the handling of sessions can be exploited to hijack
another user's session.

4) Input passed via emails is not properly sanitised before being
displayed. This can be exploited to overlay GUI interface elements
via CSS positioning when a specially crafted email is opened.

NOTE: It has also been reported that input passed to the example
"map_yp_alias" username mapping function is not properly sanitised
before being used in a shell command.

SOLUTION:
Update to version 1.4.18.

PROVIDED AND/OR DISCOVERED BY:
The vendor credits:
1) Niels Teusink and Christian Balzer
2) Niels Teusink
3) Tomas Hoger
4) Luc Beurton

ORIGINAL ADVISORY:
http://www.squirrelmail.org/security/issue/2009-05-08
http://www.squirrelmail.org/security/issue/2009-05-09
http://www.squirrelmail.org/security/issue/2009-05-10
http://www.squirrelmail.org/security/issue/2009-05-11
http://www.squirrelmail.org/security/issue/2009-05-12

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