CVE-2019-20372
MEDIUM 5.3EPSS 15.0%
NGINX before 1.17.7, with certain error_page configurations, allows HTTP request smuggling, as demonstrated by the ability of an attacker to read unauthorized web pages in environments where NGINX is being fronted by a load balancer.
- CVSS v3.1 NVD
- 5.3 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N - CVSS v2.0 NVD
- 4.3 MEDIUM
AV:N/AC:M/Au:N/C:P/I:N/A:N - EPSS
- 14.96% chance of exploitation in the next 30 days, 97th percentile
- Published
- 2020-01-09
- Updated
- 2024-08-05
Proof-of-concept exploits (3)
- 0xleft/CVE-2019-203726★ · 2023-09-16
- moften/CVE-2019-203721★ · 2025-05-06
- vuongnv3389-sec/CVE-2019-203720★ · 2022-04-06
Security advisories
- http://nginx.org/en/CHANGES
- nginx/nginx/commit/c1be55f97211d38b69ac0c2027e6812ab8b1b94e
- http://lists.opensuse.org/opensuse-security-announce/2020-02/msg00013.html
- http://seclists.org/fulldisclosure/2021/Sep/36
- https://bertjwregeer.keybase.pub/2019-12-10%20-%20error_page%20request%20smuggling.pdf
- https://duo.com/docs/dng-notes#version-1.5.4-january-2020
- kubernetes/ingress-nginx/pull/4859
- https://security.netapp.com/advisory/ntap-20200127-0003
- https://support.apple.com/kb/HT212818
- https://usn.ubuntu.com/4235-1
- https://usn.ubuntu.com/4235-2