CVE-2009-2422

Name	CVE-2009-2422
Description	The example code for the digest authentication functionality (http_authentication.rb) in Ruby on Rails before 2.3.3 defines an authenticate_or_request_with_http_digest block that returns nil instead of false when the user does not exist, which allows context-dependent attackers to bypass authentication for applications that are derived from this example by sending an invalid username without a password.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub advisories/code/issues, web search, more)
Debian Bugs	535896

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
rails (PTS)	buster	2:5.2.2.1+dfsg-1+deb10u3	fixed
	buster (security)	2:5.2.2.1+dfsg-1+deb10u5	fixed
	bullseye	2:6.0.3.7+dfsg-2	fixed
	bullseye (security)	2:6.0.3.7+dfsg-2+deb11u1	fixed
	bookworm, sid	2:6.1.7.3+dfsg-1	fixed

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

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
rails	source	lenny	(not affected)
rails	source	(unstable)	2.3.5-1			535896

[lenny] - rails <not-affected> (vulnerable code not present, introduced in 2.3.x)