nginx security advisory (CVE-2017-7529)
mdounin at mdounin.ru
Tue Jul 11 15:47:46 UTC 2017
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
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:
Patch for the issue can be found here:
More information about the nginx