Integer overflow in NGINX Open Source - CVE-2017-20005

Vulnerability details

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to integer overflow within the ngx_gmtime() function when processing dates within the autoindex module. A remote attacker with the ability to pass a file to the server with a specially crafted timestamp with a year prior to 1970 and after the year 10000, trigger an integer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Affected software

How to mitigate CVE-2017-20005

External References

• https://github.com/nginx/nginx/commit/b900cc28fcbb4cf5a32ab62f80b59292e1c85b4b
• https://trac.nginx.org/nginx/ticket/1368
• https://github.com/nginx/nginx/commit/0206ebe76f748bb39d9de4dd4b3fce777fdfdccf
• http://nginx.org/en/CHANGES
• https://lists.debian.org/debian-lts-announce/2021/06/msg00009.html
• https://security.netapp.com/advisory/ntap-20210805-0006/

Related Security Bulletins

• Integer overflow in nginx
• Multiple vulnerabilities in Dell PowerFlex Rack
• Multiple vulnerabilities in Dell PowerFlex Appliance
• Junos OS update for nginx
• Ubuntu update for nginx