CVE-2012-2739

Name	CVE-2012-2739
Description	Oracle Java SE before 7 Update 6, and OpenJDK 7 before 7u6 build 12 and 8 before build 39, computes hash values without 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.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
openjdk-7 (PTS)	jessie, jessie (lts)	7u321-2.6.28-0+deb8u1	vulnerable

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

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
openjdk-6	source	(unstable)	(unfixed)	unimportant
openjdk-7	source	(unstable)	(unfixed)	unimportant

Notes

Upstream disputes this and states it needs to be fixed in Java apps itself
http://mail.openjdk.java.net/pipermail/core-libs-dev/2012-May/010238.html
http://armoredbarista.blogspot.de/2012/02/investigating-hashdos-issue.html
https://www.openwall.com/lists/oss-security/2012/06/15/12
https://www.openwall.com/lists/oss-security/2012/06/17/1