What’s Vulnerable › Vulnerabilities

CVE-2017-20005

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 3.3% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2021-06-06 · updated 2026-06-17
• Weakness: CWE-190

Description

NGINX before 1.13.6 has a buffer overflow for years that exceed four digits, as demonstrated by a file with a modification date in 1969 that causes an integer overflow (or a false modification date far in the future), when encountered by the autoindex module.

Affected products

• Debian Linux: 9.0
• nginx: before 1.13.6 — fixed in 1.13.6

How to fix

Upgrade to a fixed version: nginx 1.13.6. Check the vendor advisory for mitigations.

References

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

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