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Squid < 2.5.STABLE7 NTLM Authentication DoS

High

Synopsis

The remote proxy server is vulnerable to a Denial of Service (DoS) attack.

Description

The remote server is running a Squid proxy server. This version is reported vulnerable to a remote denial of service in the NTLM authentication routine. If NTLM authentication is enabled, an attacker may deny service to legitimate users by sending malformed NTLMSSP packets.

Solution

Upgrade to Squid version 2.5.STABLE7 or later, or apply the vendor-supplied patch.