The resolver in nginx before 1.8.1 and 1.9.x before 1.9.10 does not properly limit CNAME resolution, which allows remote attackers to cause a denial of service (worker process resource consumption) via vectors related to arbitrary name resolution.
{ "binaries": [ { "binary_name": "nginx", "binary_version": "1.4.6-1ubuntu3.4" }, { "binary_name": "nginx-common", "binary_version": "1.4.6-1ubuntu3.4" }, { "binary_name": "nginx-core", "binary_version": "1.4.6-1ubuntu3.4" }, { "binary_name": "nginx-extras", "binary_version": "1.4.6-1ubuntu3.4" }, { "binary_name": "nginx-full", "binary_version": "1.4.6-1ubuntu3.4" }, { "binary_name": "nginx-light", "binary_version": "1.4.6-1ubuntu3.4" }, { "binary_name": "nginx-naxsi", "binary_version": "1.4.6-1ubuntu3.4" }, { "binary_name": "nginx-naxsi-ui", "binary_version": "1.4.6-1ubuntu3.4" } ], "availability": "No subscription required" }
{ "binaries": [ { "binary_name": "nginx", "binary_version": "1.9.10-0ubuntu1" }, { "binary_name": "nginx-common", "binary_version": "1.9.10-0ubuntu1" }, { "binary_name": "nginx-core", "binary_version": "1.9.10-0ubuntu1" }, { "binary_name": "nginx-extras", "binary_version": "1.9.10-0ubuntu1" }, { "binary_name": "nginx-full", "binary_version": "1.9.10-0ubuntu1" }, { "binary_name": "nginx-light", "binary_version": "1.9.10-0ubuntu1" } ], "availability": "No subscription required" }