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Category:   Application (Generic)  >   CUPS Vendors:   Easy Software Products
(Ubuntu Issues Fix) CUPS Bugs Let Remote Users Gain Elevated Privileges and Conduct Cross-Site Scripting Attacks
SecurityTracker Alert ID:  1032557
SecurityTracker URL:  http://securitytracker.com/id/1032557
CVE Reference:   CVE-2015-1158, CVE-2015-1159   (Links to External Site)
Date:  Jun 10 2015
Impact:   Disclosure of authentication information, Disclosure of user information, Execution of arbitrary code via network, Modification of user information, User access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): prior to 2.0.3
Description:   Two vulnerabilities were reported in CUPS. A remote user can gain elevated privileges on the target system. A remote user can conduct cross-site scripting attacks.

A remote user can send specially crafted localized strings to cause the the 'admin/conf' and 'admin' access control lists to fail, granting the remote user full control of the target system [CVE-2015-1158]. Version 1.2.0 and later are affected.

The CUPS templating engine does not properly filter HTML code from user-supplied input before displaying the input [CVE-2015-1159]. A remote user can 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 CUPS web interface 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.

The original advisory is available at:

https://www.kb.cert.org/vuls/id/810572

Google reported this vulnerability.

Impact:   A remote user can gain full control of the target system.

A remote user can access the target user's cookies (including authentication cookies), if any, associated with the CUPS web interface, 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.

Solution:   Ubuntu has issued a fix.

The Ubuntu advisory is available at:

http://www.ubuntu.com/usn/usn-2629-1

Vendor URL:  www.cups.org/blog.php?L1082 (Links to External Site)
Cause:   Access control error, Input validation error
Underlying OS:  Linux (Ubuntu)
Underlying OS Comments:  12.04 LTS, 14.04 LTS, 14.10, 15.04

Message History:   This archive entry is a follow-up to the message listed below.
Jun 10 2015 CUPS Bugs Let Remote Users Gain Elevated Privileges and Conduct Cross-Site Scripting Attacks



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