[nginx-announce] nginx security advisory (CVE-2017-7529)

Hello! A security issue was identified in nginx range filter. A specially crafted request might result in an integer overflow and incorrect processing of ranges, potentially resulting in sensitive information leak (CVE-2017-7529). When using nginx with standard modules this allows an attacker to obtain a cache file header if a response was returned from cache. In some configurations a cache file header may contain IP address of the backend server or other sensitive information. Besides, with 3rd party modules it is potentially possible that the issue may lead to a denial of service or a disclosure of a worker process memory. No such modules are currently known though. The issue affects nginx 0.5.6 - 1.13.2. The issue is fixed in nginx 1.13.3, 1.12.1. For older versions, the following configuration can be used as a temporary workaround: max_ranges 1; Patch for the issue can be found here: http://nginx.org/download/patch.2017.ranges.txt -- Maxim Dounin http://nginx.org/