7.2.4.3 was released which fixes security bugs http://blog.fuseyism.com/index.php/2013/10/23/security-icedtea-2-4-3-released/ It seems icedtea:6 is also affected but no release there yet.
icedtea-7 is done, but not stable so we're done icedtea-6 was not yet released
Please stabilize dev-java/icedtea-bin-6.1.12.7
amd64 stable
x86 stable. Maintainer(s), please cleanup. Security, please vote.
+ 10 Dec 2013; Tom Wijsman <TomWij@gentoo.org> -icedtea-6.1.12.4.ebuild, + -icedtea-6.1.12.5.ebuild, -icedtea-6.1.12.6.ebuild, -icedtea-7.2.3.12.ebuild, + -icedtea-7.2.4.1.ebuild: + Cleanup for security bug #489570. + 10 Dec 2013; Tom Wijsman <TomWij@gentoo.org> -icedtea-bin-6.1.12.5.ebuild, + -icedtea-bin-6.1.12.6-r1.ebuild, -icedtea-bin-6.1.12.6.ebuild, + -icedtea-bin-7.2.3.9.ebuild, -icedtea-bin-7.2.4.1.ebuild: + Cleanup for security bug #489570.
Added to existing GLSA draft
I'm just going to close this since no one cares. These versions have long gone.