CVE-2011-5036

Name	CVE-2011-5036
Description	Rack before 1.1.3, 1.2.x before 1.2.5, and 1.3.x before 1.3.6 computes hash values for form parameters without restricting the ability to trigger hash collisions predictably, which allows remote attackers to cause a denial of service (CPU consumption) by sending many crafted parameters.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
References	DSA-2783-1
Debian Bugs	653963

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
ruby-rack (PTS)	buster	2.0.6-3	fixed
	buster (security)	2.0.6-3+deb10u3	fixed
	bullseye (security), bullseye	2.1.4-3+deb11u1	fixed
	bookworm	2.2.6.4-1	fixed
	sid, trixie	2.2.7-1	fixed

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

Package	Type	Release	Fixed Version	Origin	Debian Bugs
librack-ruby	source	squeeze	1.1.0-4+squeeze1	DSA-2783-1
librack-ruby	source	(unstable)	(unfixed)
ruby-rack	source	(unstable)	1.4.0-1		653963

https://github.com/rack/rack/commit/5b9d09a81a9fdc9475f0ab0095cb2a33bf2a8f91