SynopsisThe remote proxy server is affected by a denial of service vulnerability.
DescriptionAccording to its banner, the version of Squid running on the remote host is 3.1.x after or equal to 18.104.22.168 and prior or equal to 3.1.23, 3.2.x after or equal to 22.214.171.124 and prior or equal to 126.96.36.199, 3.3.x, 3.4.x, 3.5.x prior or equal to 3.5.27, or 4.x prior to 4.0.13. It is, therefore, affected by a denial of service (DoS) vulnerability in the ESI response processing component due to incorrect pointer handling. A remote attacker controlled server can exploit this issue, via a crafted ESI response, to cause a denial of service for all clients accessing the Squid service.
Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.
SolutionUpgrade to Squid version 4.0.13 or later. Alternatively, apply the vendor-supplied patch.