CVE-2019-20372
First published: Thu Jan 09 2020(Updated: )
IDE Xcode Server. Multiple issues were addressed by updating nginx to version 1.21.0.
Credit: CVE-2016-0742 CVE-2016-0746 CVE-2016-0747 CVE-2017-7529 CVE-2018-16843 CVE-2018-16844 CVE-2018-16845 CVE-2019-20372 cve@mitre.org cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/rh-nginx116-nginx | <1:1.16.1-4.el7.1 | 1:1.16.1-4.el7.1 |
| F5 Nginx | <1.17.7 | |
| Apple Xcode | <13.0 | |
| Canonical Ubuntu Linux | =14.04 | |
| openSUSE Leap | =15.1 | |
| Netapp Cloud Backup | ||
| Apple Xcode | <13 | 13 |
| redhat/nginx | <1.17.7 | 1.17.7 |
| debian/nginx | 1.18.0-6.1+deb11u3 1.22.1-9 1.26.0-2 |
Remedy
To mitigate this issue, use a named location instead of having the error_page handler do the redirect, this configuration is not vulnerable to request smuggling on all versions of NGINX we tested. server { listen 80; server_name localhost; error_page 401 @401; location / { return 401; } location @401 { return 302 http://example.org; } }
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Reference Links
- https://www.cve.org/CVERecord?id=CVE-2019-20372 https://nvd.nist.gov/vuln/detail/CVE-2019-20372
- https://bugzilla.redhat.com/show_bug.cgi?id=1790277
- https://access.redhat.com/errata/RHSA-2021:0778
- https://access.redhat.com/errata/RHSA-2020:5495
- https://access.redhat.com/errata/RHSA-2020:2817
- https://access.redhat.com/security/cve/cve-2019-20372
- http://lists.opensuse.org/opensuse-security-announce/2020-02/msg00013.html
- http://nginx.org/en/CHANGES
- 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
- https://github.com/kubernetes/ingress-nginx/pull/4859
- https://github.com/nginx/nginx/commit/c1be55f97211d38b69ac0c2027e6812ab8b1b94e
- 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/
- https://support.apple.com/en-us/HT212818 (Advisory)
- https://launchpad.net/bugs/cve/CVE-2019-20372
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1790278
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1790280
- https://access.redhat.com/errata/RHSA-2021:0779
- http://example.org
- https://security-tracker.debian.org/tracker/CVE-2019-20372
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-20372
- https://nvd.nist.gov/vuln/detail/CVE-2019-20372
- https://ubuntu.com/security/CVE-2019-20372
Parent vulnerabilities
(Appears in the following advisories)
Peer vulnerabilities
(Found alongside the following vulnerabilities)
Frequently Asked Questions
What is the severity of CVE-2019-20372?
The severity of CVE-2019-20372 is medium with a severity value of 5.3.
How does NGINX before 1.17.7 allow HTTP request smuggling?
NGINX before 1.17.7, with certain error_page configurations, allows HTTP request smuggling.
What is the affected software for CVE-2019-20372?
The affected software for CVE-2019-20372 includes NGINX versions before 1.17.7 and certain versions of Apple Xcode.
What is the remedy for CVE-2019-20372?
The remedy for CVE-2019-20372 is to update NGINX to version 1.17.7 or later.
Where can I find more information about CVE-2019-20372?
You can find more information about CVE-2019-20372 on the CVE website, NIST NVD, Red Hat Bugzilla, and Red Hat Security Advisory.
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