#VU76699 Integer overflow in nginx - CVE-2017-20005
Published: May 31, 2023
Vulnerability identifier: #VU76699
Vulnerability risk: High
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2017-20005
CWE-ID: CWE-190
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
nginx
nginx
Software vendor:
F5 Networks
F5 Networks
Description
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.
Remediation
Install update from vendor's website.
External links
- 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/