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Squid 3.x < 3.3.13 / 3.4.7 Request Processing DoS

Description

According to its banner, the version of Squid running on the remote host is 3.x prior to 3.3.13 or 3.4.7. It is, therefore, affected by a denial of service vulnerability. The flaw exists due to user-supplied input not being properly validated in request parsing. This allows a remote attacker to specially craft a request with Range headers with unidentifiable byte-range values to crash the application. Note that Nessus has relied only on the version in the proxy server's banner. The patch released to address the issue does not update the version in the banner. If the patch has been applied properly, and the service has been restarted, consider this to be a false positive.


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