Ubuntu has issued an advisory today (October 11): http://www.ubuntu.com/usn/usn-1602-1/ These issues only affect ruby 1.9 (in Cauldron). There was another Ubuntu advisory for ruby 1.8, reported in Bug 7769. For ruby 1.9, Ubuntu added a patch from upstream to fix these issues. The patch, debian/patches/CVE-2012-4464_CVE-2012-4466.patch, is in here: https://launchpad.net/ubuntu/+archive/primary/+files/ruby1.9.1_1.9.3.0-1ubuntu2.3.debian.tar.gz
CC: (none) => shlomif
There's also CVE-2012-4522, fixed upstream in 1.9.3p286: http://lists.fedoraproject.org/pipermail/package-announce/2012-October/090515.html from http://lwn.net/Vulnerabilities/520751/
Summary: ruby new security issues CVE-2012-4464 and CVE-2012-4466 => ruby new security issues CVE-2012-4464, CVE-2012-4466, and CVE-2012-4522
already pushed into core/updates_testing.
Status: NEW => RESOLVEDResolution: (none) => FIXED