The unpacker::redirect_stdio function in unpack.cpp in unpack200 in OpenJDK 6, 7, and 8; Oracle Java SE 5.0u61, 6u71, 7u51, and 8; JRockit R27.8.1 and R28.3.1; and Java SE Embedded 7u51 does not securely create temporary files when a log file cannot be opened, which allows local users to overwrite arbitrary files via a symlink attack on /tmp/unpack.log.
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=737562
http://marc.info/?l=bugtraq&m=140852886808946&w=2
http://marc.info/?l=bugtraq&m=140852974709252&w=2
http://rhn.redhat.com/errata/RHSA-2014-0675.html
http://rhn.redhat.com/errata/RHSA-2014-0685.html
https://access.redhat.com/errata/RHSA-2014:0413
https://access.redhat.com/errata/RHSA-2014:0414
https://bugzilla.redhat.com/show_bug.cgi?id=1060907
http://seclists.org/oss-sec/2014/q1/242
http://seclists.org/oss-sec/2014/q1/285
http://secunia.com/advisories/58415
http://secunia.com/advisories/59058
http://security.gentoo.org/glsa/glsa-201406-32.xml
http://www-01.ibm.com/support/docview.wss?uid=swg21672080
http://www-01.ibm.com/support/docview.wss?uid=swg21676746
http://www-01.ibm.com/support/docview.wss?uid=swg21679713
http://www.debian.org/security/2014/dsa-2912
http://www.oracle.com/technetwork/topics/security/cpuapr2014-1972952.html