Suse has released security update for squid3 to fix the vulnerabilities.
SUSE Linux Enterprise Server 11-SP4 SUSE Linux Enterprise Debuginfo 11-SP4
This vulnerability could be exploited to gain partial access to sensitive information. Malicious users could also use this vulnerability to change partial contents or configuration on the system. Additionally this vulnerability can also be used to cause a limited denial of service in the form of interruptions in resource availability.
Upgrade to the latest packages which contain a patch. To install this SUSE Security Update use YaST online_update. Alternatively you can run the command listed for your product.
To install packages using the command line interface, use the command “yum update”.
Refer to Suse security advisory SUSE-SU-2016:1996-1 to address this issue and obtain further details.
Following are links for downloading patches to fix the vulnerabilities:
Trend Micro Virtual Patching
Virtual Patch #1005303: 1005303 – Squid ‘cachemgr.cgi’ Remote Denial Of Service Vulnerability