SquirrelMail Input Validation Hole in 'mailbox' Lets Remote Users Conduct Cross-Site Scripting Attacks
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SecurityTracker Alert ID: 1010007 |
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SecurityTracker URL: http://securitytracker.com/id/1010007
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CVE Reference:
CAN-2004-0519
(Links to External Site)
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Updated: Jun 5 2004
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Original Entry Date: Apr 30 2004
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Impact:
Disclosure of authentication information, Disclosure of user information, Execution of arbitrary code via network, Modification of user information
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Vendor Confirmed: Yes Exploit Included: Yes
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Version(s): 1.4.2
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Description:
An input validation vulnerability was reported in SquirrelMail in the processing of folder names. A remote user can conduct cross-site scripting attacks.
A remote user can reportedly create a specially crafted URL that, when loaded by a target user, will cause arbitrary scripting code to be executed by the target user's browser. The code will originate from the site running the vulnerable software and will run in the security context of that site. As a result, the code will be able to access the target user's cookies (including authentication cookies), if any, associated with the site, access data recently submitted by the target user via web form to the site, or take actions on the site acting as the target user.
A demonstration exploit URL is provided:
http://[target]/mail/src/compose.php?mailbox="><script>window.alert(document.cookie)</script>
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Impact:
A remote user can access the target user's cookies (including authentication cookies), if any, associated with the site running the vulnerable software, access data recently submitted by the target user via web form to the site, or take actions on the site acting as the target user.
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Solution:
No solution was available at the time of this entry. The vendor is reportedly working on a fixed version (1.4.3).
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Vendor URL: www.squirrelmail.org/ (Links to External Site)
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Cause:
Input validation error
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Underlying OS:
Linux (Any), UNIX (Any)
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Message History:
This archive entry has one or more follow-up message(s) listed below.
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Source Message Contents
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Date: 29 Apr 2004 21:09:06 -0000
Subject: SquirrelMail Cross Scripting Attacks....
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SquirrelMail latest version (although is tested on version 1.4.2) is prone to many cross scripting attacks that can be used to steal
user cookies.The Exploit lies in the way squirrel mail represents the folder names and shows them.To make the matters worse.No extra
unique variable added to the url for each user therefore it is easy for the attacker to just pass the url in mail and steal the session
cookie.
Some of the exploit are at :
http://victim.com/mail/src/compose.php?mailbox=INBOX
which can be replaced as follows
http://victim.com/mail/src/compose.php?mailbox="><script>malacious script</script>
Example:
http://victim.com/mail/src/compose.php?mailbox="><script>window.alert(document.cookie)</script>
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Squirrel Mail Coders have been informed of this vulnerability but the vulnerability still exists in their latest version.
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Please Let me know if i am wrong anywhere...
Regards,
Alvin
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