Daniel Danner discovered that tmux, a terminal multiplexer, is not properly dropping group privileges. Due to a patch introduced by Debian, when invoked with the -S option, tmux is not dropping permissions obtained through its setgid installation (CVE-2011-1496). For the lenny-backports distribution this problem has been fixed in version 1.3-2+squeeze1~bpo50+1. For the squeeze-backports distribution this problem has been fixed in version 1.4-6~bpo60+1. For the stable distribution (squeeze), this problem has been fixed in version 1.3-2+squeeze1. For the testing distribution (wheezy), this problem has been fixed in version 1.4-6. For the unstable distribution (sid), this problem has been fixed in version 1.4-6. Upgrade instructions -------------------- If you don't use pinning (see [1]) you have to update the package manually via "apt-get -t lenny-backports install <packagelist>" with the packagelist of your installed packages affected by this update. [1] <http://backports.debian.org/Instructions> We recommend to pin (in /etc/apt/preferences) the backports repository to 200 so that new versions of installed backports will be installed automatically. Package: * Pin: release a=lenny-backports Pin-Priority: 200 -- Romain Francoise <rfrancoise@debian.org> http://people.debian.org/~rfrancoise/
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