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Squid Proxy Cache Security Update Advisory SQUID-2018:5
Information
Severity
Severity
Family
Family
CVSSv2 Base
CVSSv2 Base
CVSSv2 Vector
CVSSv2 Vector
Solution Type
Solution Type
Created
Created
Modified
Modified
Summary
Squid is prone to a denial of service vulnerability due to a memory leak in the SNMP query rejection code.
Insight
Insight
This problem allows a remote attacker to consume all memory available to the Squid process, causing it to crash. In environments where per-process memory restrictions are not enforced strictly, or configured to large values this may also affect other processes operating on the same machine. Leading to a much worse denial of service situation. This problem is limited to Squid built with SNMP support and receiving SNMP traffic.
Affected Software
Affected Software
Squid versions 3.2.0.10 - 3.5.28, 4.x - 4.3.
Detection Method
Detection Method
Checks if a vulnerable version is present on the target host.
Solution
Solution
Update to version 4.4 or later.