CVE-2019-16201

NameCVE-2019-16201
DescriptionWEBrick::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.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
ReferencesDLA-2007-1

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
jruby (PTS)jessie1.5.6-9vulnerable
jessie (security)1.5.6-9+deb8u1vulnerable
stretch (security), stretch1.7.26-1+deb9u1vulnerable
bullseye, sid, buster9.1.17.0-3vulnerable
ruby2.1 (PTS)jessie2.1.5-2+deb8u3vulnerable
jessie (security)2.1.5-2+deb8u8fixed
ruby2.3 (PTS)stretch (security), stretch2.3.3-1+deb9u6vulnerable
ruby2.5 (PTS)buster2.5.5-3vulnerable
bullseye, sid2.5.7-1fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
jrubysource(unstable)(unfixed)
ruby2.1source(unstable)(unfixed)
ruby2.1sourcejessie2.1.5-2+deb8u8DLA-2007-1
ruby2.3source(unstable)(unfixed)
ruby2.5source(unstable)2.5.7-1

Notes

https://github.com/ruby/ruby/commit/36e057e26ef2104bc2349799d6c52d22bb1c7d03
https://www.ruby-lang.org/en/news/2019/10/01/webrick-regexp-digestauth-dos-cve-2019-16201/

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