nginx 0.6.x < 1.20.1 1-Byte Memory Overwrite RCE
Description
According to its Server response header, the installed version of nginx is 0.6.18 prior to 1.20.1. It is, therefore, affected by a remote code execution vulnerability. A security issue in nginx resolver was identified, which might allow an unauthenticated remote attacker to cause 1-byte memory overwrite by using a specially crafted DNS response, resulting in worker process crash or, potentially, in arbitrary code execution.
mmwilson0
commented
2 years ago
nginx 0.6.x < 1.20.1 1-Byte Memory Overwrite RCE Description According to its Server response header, the installed version of nginx is 0.6.18 prior to 1.20.1. It is, therefore, affected by a remote code execution vulnerability. A security issue in nginx resolver was identified, which might allow an unauthenticated remote attacker to cause 1-byte memory overwrite by using a specially crafted DNS response, resulting in worker process crash or, potentially, in arbitrary code execution.
Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number. Solution Upgrade to nginx 1.20.1 or later. See Also http://mailman.nginx.org/pipermail/nginx-announce/2021/000300.html http://nginx.org/download/patch.2021.resolver.txt