CVE-2019-16201
First published: Tue Oct 01 2019(Updated: )
WEBrick::HTTPAuth::DigestAuth in Ruby through 2.4.7, 2.5.x through 2.5.6, and 2.6.x through 2.6.4 has a regular expression Denial of Service cause by looping/backtracking. A victim must expose a WEBrick server that uses DigestAuth to the Internet or a untrusted network.
Credit: cve@mitre.org cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/rh-ruby25-ruby | <0:2.5.9-9.el7 | 0:2.5.9-9.el7 |
| redhat/rh-ruby26-ruby | <0:2.6.7-119.el7 | 0:2.6.7-119.el7 |
| redhat/ruby | <2.4.8 | 2.4.8 |
| redhat/ruby | <2.5.7 | 2.5.7 |
| redhat/ruby | <2.6.5 | 2.6.5 |
| redhat/ruby | <2.7.0 | 2.7.0 |
| ubuntu/jruby | <1.5.6-9+ | 1.5.6-9+ |
| ubuntu/ruby2.3 | <2.3.1-2~ubuntu16.04.14 | 2.3.1-2~ubuntu16.04.14 |
| ubuntu/ruby2.5 | <2.5.1-1ubuntu1.6 | 2.5.1-1ubuntu1.6 |
| ubuntu/ruby2.5 | <2.5.5-1ubuntu1.1 | 2.5.5-1ubuntu1.1 |
| ubuntu/ruby2.5 | <2.5.5-4ubuntu2.1 | 2.5.5-4ubuntu2.1 |
| ubuntu/ruby2.5 | <2.5.7-1 | 2.5.7-1 |
| debian/jruby | 9.3.9.0+ds-8 9.4.8.0+ds-1 | |
| ruby-lang Ruby | >=2.4.0<=2.4.7 | |
| ruby-lang Ruby | >=2.5.0<=2.5.6 | |
| ruby-lang Ruby | >=2.6.0<=2.6.4 | |
| Debian | =8.0 | |
| Debian Debian Linux | =8.0 |
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Reference Links
- https://www.cve.org/CVERecord?id=CVE-2019-16201 https://nvd.nist.gov/vuln/detail/CVE-2019-16201 https://www.ruby-lang.org/en/news/2019/10/01/webrick-regexp-digestauth-dos-cve-2019-16201/
- https://bugzilla.redhat.com/show_bug.cgi?id=1773728
- https://access.redhat.com/errata/RHSA-2021:2587
- https://access.redhat.com/errata/RHSA-2021:2588
- https://access.redhat.com/errata/RHSA-2022:0581
- https://access.redhat.com/errata/RHSA-2022:0582
- https://access.redhat.com/errata/RHSA-2021:2104
- https://access.redhat.com/errata/RHSA-2021:2230
- https://access.redhat.com/security/cve/cve-2019-16201
- http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00041.html
- https://hackerone.com/reports/661722
- https://lists.debian.org/debian-lts-announce/2019/11/msg00025.html
- https://lists.debian.org/debian-lts-announce/2019/12/msg00009.html
- https://lists.debian.org/debian-lts-announce/2020/08/msg00027.html
- https://lists.debian.org/debian-lts-announce/2023/04/msg00033.html
- https://seclists.org/bugtraq/2019/Dec/31
- https://seclists.org/bugtraq/2019/Dec/32
- https://security.gentoo.org/glsa/202003-06
- https://www.debian.org/security/2019/dsa-4587
- https://www.oracle.com/security-alerts/cpujan2020.html
- https://launchpad.net/bugs/cve/CVE-2019-16201
- https://www.ruby-lang.org/en/news/2019/10/01/webrick-regexp-digestauth-dos-cve-2019-16201/
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1773729
- https://github.com/ruby/ruby/commit/36e057e26ef2104bc2349799d6c52d22bb1c7d03
- https://security-tracker.debian.org/tracker/CVE-2019-16201
- https://ubuntu.com/security/notices/USN-4201-1
- https://www.cve.org/CVERecord?id=CVE-2019-16201
- https://nvd.nist.gov/vuln/detail/CVE-2019-16201
- https://github.com/ruby/ruby/commit/05cdcdc6ec7f0777ba56100308e54e97e277293f
- https://ubuntu.com/security/CVE-2019-16201
Parent vulnerabilities
(Appears in the following advisories)
Frequently Asked Questions
What is CVE-2019-16201?
CVE-2019-16201 is a vulnerability in Ruby's WEBrick::HTTPAuth::DigestAuth that can cause denial of service through looping/backtracking.
What is the severity of CVE-2019-16201?
CVE-2019-16201 is classified as a high severity vulnerability.
Which versions of Ruby are affected by CVE-2019-16201?
Versions 2.4.7 to 2.4.8, 2.5.x to 2.5.7, and 2.6.x to 2.6.5 of Ruby are affected by CVE-2019-16201.
How can I fix CVE-2019-16201?
To fix CVE-2019-16201, update Ruby to version 2.5.9 or later for Ruby 2.5.x, and version 2.6.6 or later for Ruby 2.6.x.
Where can I find more information about CVE-2019-16201?
You can find more information about CVE-2019-16201 on the CVE website, NVD, and the official Ruby website.
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