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Category:   Application (Generic)  >   CUPS Vendors:   Easy Software Products
CUPS Logic Error in Processing '/..' Requests Lets Remote Users Deny Service
SecurityTracker Alert ID:  1012811
SecurityTracker URL:  http://securitytracker.com/id/1012811
CVE Reference:   CVE-2005-2874   (Links to External Site)
Updated:  Sep 27 2005
Original Entry Date:  Jan 7 2005
Impact:   Denial of service via network
Fix Available:  Yes  Vendor Confirmed:  Yes  Exploit Included:  Yes  
Version(s): 1.1.21, 1.1.22
Description:   A denial of service vulnerability was reported in CUPS. A remote user can cause the target service to hang.

kmuto reported that a remote user can send a specially crafted HTTP GET request to cause the target service to hang and consume all available CPU resources. A demonstration exploit request is provided:

GET /..a HTTP/1.1

The logic error was introduced after 1.1.20.

Impact:   A remote user can cause the CUPS service to hang and consume all available CPU resources.
Solution:   The vendor has released a fixed version (1.1.23), available at:

http://www.cups.org/software.php

Red Hat has issued a fix for Red Hat Enterprise Linux 4:

https://rhn.redhat.com/errata/RHSA-2005-772.html

Vendor URL:  www.cups.org/str.php?L1042+P0+S-1+C0+I0+E0+Q1042 (Links to External Site)
Cause:   State error
Underlying OS:  Linux (Any), UNIX (Any)

Message History:   This archive entry has one or more follow-up message(s) listed below.
Sep 27 2005 (Red Hat Issues Fix) CUPS Logic Error in Processing '/..' Requests Lets Remote Users Deny Service
Red Hat has released a fix for Red Hat Enterprise Linux.



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