New! Vulnerability Priority Rating (VPR)
Tenable calculates a dynamic VPR for every vulnerability. VPR combines vulnerability information with threat intelligence and machine learning algorithms to predict which vulnerabilities are most likely to be exploited in attacks. Read more about what VPR is and how it's different from CVSS.
VPR Score: 4.4
SynopsisThe remote proxy server is prone to a denial of service attack.
DescriptionAccording to its banner, the version of the Squid proxy caching server installed on the remote host is 2.x or older than 3.0.STABLE23 / 126.96.36.199. Such versions reportedly fail to correctly validate DNS packets, which can be abused by a remote attack to cause a short-term denial of service.
Note that Nessus has relied only on the version in the proxy server's banner, which is not updated by either of the patches the project has released to address this issue. If one of those has been applied properly and the service restarted, consider this to be a false positive.
SolutionEither upgrade to Squid version 3.0.STABLE23 / 188.8.131.52 or later or apply the appropriate patch referenced in the project's advisory above.