CVE-2012-5370

Name	CVE-2012-5370
Description	JRuby computes hash values without properly restricting the ability to trigger hash collisions predictably, which allows context-dependent attackers to cause a denial of service (CPU consumption) via crafted input to an application that maintains a hash table, as demonstrated by a universal multicollision attack against the MurmurHash2 algorithm, a different vulnerability than CVE-2011-4838.
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-209-1
Debian Bugs	694694

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
jruby (PTS)	jessie, jessie (lts)	1.5.6-9+deb8u2	fixed
	stretch (security), stretch (lts), stretch	1.7.26-1+deb9u3	fixed
	buster (security), buster, buster (lts)	9.1.17.0-3+deb10u1	fixed
	bookworm	9.3.9.0+ds-8	fixed
	sid, trixie	9.4.8.0+ds-1	fixed

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

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
jruby	source	squeeze	1.5.1-1+deb6u1		DLA-209-1
jruby	source	(unstable)	1.5.6-5			694694