This bug was fixed in the package isc-dhcp - 4.1.1-P1-15ubuntu9.6
---------------
isc-dhcp (4.1.1-P1-15ubuntu9.6) natty-security; urgency=low
[ Jamie Strandboge ]
* debian/dhclient-script.linux: Explicitly set the PATH to that of
ENV_SUPATH in /etc/login.defs and unset various other variables. We need
to do this so /sbin/dhclient cannot abuse the environment to escape
AppArmor confinement via this script. Don't worry about
debian/dhclient-script.linux.udeb or debian/dhclient-script.kfreebsd*
since AppArmor isn't used in these environments.
- LP: #1045986
[ Marc Deslauriers ]
* SECURITY UPDATE: denial of service via ipv6 lease expiration time
reduction
- debian/patches/CVE-2012-3955.patch: properly handle time reduction in
server/dhcpv6.c, server/mdb6.c.
- CVE-2012-3955
-- Marc Deslauriers <marc.deslauri...@ubuntu.com> Fri, 14 Sep 2012 13:04:46
-0400
** Changed in: dhcp3 (Ubuntu Lucid)
Status: Fix Committed => Fix Released
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https://bugs.launchpad.net/bugs/1045986
Title:
Ubuntu AppArmor policy is too lenient with shell scripts
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