CVE-2019-20372

high-risk
Published 2020-01-09

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.

Do I need to act?

!
69.7% chance of exploitation in next 30 days
EPSS score — higher than 30% of all CVEs
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
5
CVSS 5.3/10 Medium
NETWORK / LOW complexity

Affected Products (5)

Affected Vendors

Apple F5 Canonical Netapp Opensuse

References (22)

Mailing List http://lists.opensuse.org/opensuse-security-announce/2020-02/msg00013.html
Mitigation http://nginx.org/en/CHANGES
Mailing List http://seclists.org/fulldisclosure/2021/Sep/36
Exploit https://bertjwregeer.keybase.pub/2019-12-10%20-%20error_page%20request%20smuggli...
Release Notes https://duo.com/docs/dng-notes#version-1.5.4-january-2020
Patch https://github.com/kubernetes/ingress-nginx/pull/4859
Patch https://github.com/nginx/nginx/commit/c1be55f97211d38b69ac0c2027e6812ab8b1b94e
Third Party Advisory https://security.netapp.com/advisory/ntap-20200127-0003/
Third Party Advisory https://support.apple.com/kb/HT212818
Third Party Advisory https://usn.ubuntu.com/4235-1/
Third Party Advisory https://usn.ubuntu.com/4235-2/
Mailing List http://lists.opensuse.org/opensuse-security-announce/2020-02/msg00013.html
Mitigation http://nginx.org/en/CHANGES
Mailing List http://seclists.org/fulldisclosure/2021/Sep/36
Exploit https://bertjwregeer.keybase.pub/2019-12-10%20-%20error_page%20request%20smuggli...
Release Notes https://duo.com/docs/dng-notes#version-1.5.4-january-2020
Patch https://github.com/kubernetes/ingress-nginx/pull/4859
Patch https://github.com/nginx/nginx/commit/c1be55f97211d38b69ac0c2027e6812ab8b1b94e
Third Party Advisory https://security.netapp.com/advisory/ntap-20200127-0003/
Third Party Advisory https://support.apple.com/kb/HT212818
and 2 more references
52
/ 100
high-risk
Severity 21/34 · High
Exploitability 19/34 · Moderate
Exposure 12/34 · Low