Squid 3.x < 3.2.9 / 3.3.3 strHdrAcptLangGetItem Malformed Accept-Language Denial of Service
Medium Nessus Plugin ID 65601
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 3.2.x prior to 3.2.9 or 3.3.x prior to 3.3.3 and is, therefore, affected by a denial of service vulnerability. An error exists in the function 'strHdrAcptLangGetItem' in the file 'errorpage.cc' that could allow certain 'Accept-Language' HTTP headers to cause a denial of service condition.
Note that Nessus has relied only on the version in the proxy server's banner, which is not updated by the patch the project has released to address the issue. If this patch has been applied properly and the service has been restarted, consider this to be a false positive.
SolutionEither upgrade to Squid version 3.2.9 / 3.3.3 or later, or apply the vendor-supplied patch.