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Squid < 2.5.STABLE5 %xx URL Encoding ACL Bypass



The remote proxy server is vulnerable to a flaw which allows for the bypassing of authentication


The remote Squid caching proxy, according to its version number, is vulnerable to a flaw that may allow an attacker to gain access to unauthorized resources. The flaw in itself consists of sending a malformed username containing the %00 (null) character, that may allow an attacker to access otherwise restricted resources.


Upgrade to Squid 2.5.STABLE5 or later.