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Category:   Application (Web Server/CGI)  >   Squid Vendors:   Squid-cache.org
Squid Buffer Overflow in 'cachemgr.cgi' Tool Lets Remote Users Execute Arbitrary Code
SecurityTracker Alert ID:  1035646
SecurityTracker URL:  http://securitytracker.com/id/1035646
CVE Reference:   CVE-2016-4051   (Links to External Site)
Date:  Apr 21 2016
Impact:   Execution of arbitrary code via network, User access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 2.x, 3.x prior to 3.5.17, 4.x prior to 4.0.9
Description:   A vulnerability was reported in Squid. A remote user can cause arbitrary code to be executed on the target system.

A remote user can send specially crafted data that will be presented in the Squid manager reports. When the target administrator processes the reports via the 'cachemgr.cgi' tool, a buffer overflow occurs and arbitrary code is executed on the target system.

CESG and Yuriy M. Kaminskiy independently reported this vulnerability.

Impact:   A remote user can create data that, when processed by the target administrative user, will execute arbitrary code on the target system.
Solution:   The vendor has issued a fix (3.5.17, 4.0.9).

The vendor's advisory is available at:

http://www.squid-cache.org/Advisories/SQUID-2016_5.txt

Vendor URL:  www.squid-cache.org/Advisories/SQUID-2016_5.txt (Links to External Site)
Cause:   Boundary error
Underlying OS:  Linux (Any), UNIX (Any)

Message History:   This archive entry has one or more follow-up message(s) listed below.
May 31 2016 (Red Hat Issues Fix) Squid Buffer Overflow in 'cachemgr.cgi' Tool Lets Remote Users Execute Arbitrary Code
Red Hat has issued a fix for Red Hat Enterprise Linux 6.
May 31 2016 (Red Hat Issues Fix) Squid Buffer Overflow in 'cachemgr.cgi' Tool Lets Remote Users Execute Arbitrary Code
Red Hat has issued a fix for Red Hat Enterprise Linux 7.
Jun 9 2016 (Ubuntu Issues Fix) Squid Buffer Overflow in 'cachemgr.cgi' Tool Lets Remote Users Execute Arbitrary Code
Ubuntu has issued a fix for Ubuntu Linux 12.04 LTS, 14.04 LTS, 15.10, and 16.04 LTS.
Aug 4 2016 (Red Hat Issues Fix) Squid Buffer Overflow in 'cachemgr.cgi' Tool Lets Remote Users Execute Arbitrary Code
Red Hat has issued a fix for Red Hat Enterprise Linux 6.



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