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Squid Proxy Cache Security Update Advisory SQUID-2018:3
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 incorrect buffer management when processing HTTP Digest Authentication credentials.
Insight
Insight
Due to incorrect input validation the HTTP Request header parser for Digest authentication may access memory outside the allocated memory buffer. On systems with memory access protections this can result in the Squid process being terminated unexpectedly. Resulting in a denial of service for all clients using the proxy.
Affected Software
Affected Software
Squid versions 3.3.9 - 3.5.28 and 4.x - 4.7.
Detection Method
Detection Method
Checks if a vulnerable version is present on the target host.
Solution
Solution
Update to version 4.8 or later.