CVE-2021-22904

Name	CVE-2021-22904
Description	The actionpack ruby gem before 6.1.3.2, 6.0.3.7, 5.2.4.6, 5.2.6 suffers from a possible denial of service vulnerability in the Token Authentication logic in Action Controller due to a too permissive regular expression. Impacted code uses `authenticate_or_request_with_http_token` or `authenticate_with_http_token` for request authentication.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
References	DLA-2655-1, DSA-4929-1
Debian Bugs	988214

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
rails (PTS)	bullseye (security), bullseye	2:6.0.3.7+dfsg-2+deb11u2	fixed
	bookworm	2:6.1.7.3+dfsg-2~deb12u1	fixed
	sid, trixie	2:6.1.7.3+dfsg-4	fixed

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

Package	Type	Release	Fixed Version	Origin	Debian Bugs
rails	source	stretch	2:4.2.7.1-1+deb9u5	DLA-2655-1
rails	source	buster	2:5.2.2.1+dfsg-1+deb10u3	DSA-4929-1
rails	source	(unstable)	2:6.0.3.7+dfsg-1		988214

Notes

https://github.com/rails/rails/commit/eab8c20f3ef6a022c4c11b439b1b22cef1768d5e (main)
https://github.com/rails/rails/commit/d861fa8ade353390c4419b53a6c6b41f3005b1f2 (v6.0.3.7)
https://github.com/rails/rails/commit/3d9e9fdf14e044b3ba66f909582c228a9d4ffb5c (v5.2.4.6)