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Category:   Application (Web Server/CGI)  >   Squid Vendors:   Squid-cache.org
Squid Bug in ICMPv6 Pinger Lets Remote Users Deny Service and Local Users Obtain Potentially Sensitive Heap Memory Contents
SecurityTracker Alert ID:  1035457
SecurityTracker URL:  http://securitytracker.com/id/1035457
CVE Reference:   CVE-2016-3947   (Links to External Site)
Date:  Apr 4 2016
Impact:   Denial of service via network, Disclosure of system information
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 3.1.0 - 3.5.15, 4.0 - 4.0.7
Description:   A vulnerability was reported in Squid. A remote user can cause denial of service conditions. A local user can obtain potentially sensitive information from system memory.

A remote user can send specially crafted ICMPv6 packets to trigger a buffer overflow in the pinger binary and potentially cause service degradation or transaction failures.

On systems that do not include buffer overflow protection mechanisms, a user can cause arbitrary amounts of information from the heap to be written to Squid log files.

Yuriy M. Kaminskiy reported this vulnerability.

Impact:   A remote user can cause service degradation or transaction failures.

A local user can obtain potentially sensitive information from system memory on the target system.

Solution:   The vendor has issued a fix (3.5.16, 4.0.8).

The vendor's advisory is available at:

http://www.squid-cache.org/Advisories/SQUID-2016_3.txt

Vendor URL:  www.squid-cache.org/Advisories/SQUID-2016_3.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.
Jun 9 2016 (Ubuntu Issues Fix) Squid Bug in ICMPv6 Pinger Lets Remote Users Deny Service and Local Users Obtain Potentially Sensitive Heap Memory Contents
Ubuntu has issued a fix for Ubuntu Linux 12.04 LTS, 14.04 LTS, 15.10, and 16.04 LTS.



 Source Message Contents



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