Date: Wed, 17 Oct 2012 18:41:12 -0600 From: Kurt Seifried <kseifried@...hat.com> To: oss-security@...ts.openwall.com CC: Michael Gilbert <mgilbert@...ian.org> Subject: Re: CVE-2012-2248: isc-dhcp, Debian-specific: build path included in PATH -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On 10/17/2012 01:46 PM, Michael Gilbert wrote: > On Wed, Oct 17, 2012 at 3:42 PM, Kurt Seifried wrote: >> -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 >> >> On 10/15/2012 02:50 PM, Raphael Geissert wrote: >>> Hi, >>> >>> Michael Stapelberg, Tollef Fog Heen, and Michael Biebl >>> discovered that dhclient was setting dhclient-script's PATH to >>> one that included a subdirectory of the build directory. >>> This issue is caused by the way isc-dhcp is packaged in >>> Debian. >>> >>> At least two versions of isc-dhcp for the amd64 (x86_64) >>> architecture in Debian were found two be setting PATH to a >>> subdirectory of /home/zero79/, which would allow a user with >>> such HOME directory to be able to execute code as root. >>> >>> To clarify the bug report: it is not specific to samba or hooks >>> in general, PATH is injected in the environment passed to the >>> execve() call that executes dhclient-script. >>> >>> Since this issue doesn't affect the stable release, there won't >>> be a DSA. This email is just a heads up. >>> >>> http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=690532 >>> >>> Cheers, >>> >> >> Was this software released however? > > It was uploaded to and affected Debian testing and unstable. > Testing has not yet been officially "released", but some people use > testing as if it were an official release. Unstable never gets > released. When I say released I meant in the sense of made available for download, not in the sense of software engineering and doing a proper "release". Release information here: http://lists.alioth.debian.org/pipermail/pkg-dhcp-devel/2012-April/001275.html Any ways as you can see it's had a CVE assigned: So for Debian Bug report logs - #690532 CVE-2012-2248: build system paths used in -DCLIENT_PATH So my work here is done =). > Best wishes, Mike - -- Kurt Seifried Red Hat Security Response Team (SRT) PGP: 0x5E267993 A90B F995 7350 148F 66BF 7554 160D 4553 5E26 7993 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://www.enigmail.net/ iQIcBAEBAgAGBQJQf1AoAAoJEBYNRVNeJnmT3SoQAJqW5UirPGOUzSb5NStJD9Se GSImky2n+78NyPLwlzSLqB3QRjyEwjbJ01RNXzFU/Z4h4nlmfVVrBrszlWk0T6Fv cBXKB3cFGmCxDPYErm4Uh8WmSeD3aFUTe2iibXMUhOAlfoVwUadL5FMpBBjszFo+ NBqddySqX1TpAm3CHZnHi29U7kj9/7p/JVkdsqHyF7rMW9lXEp2OG2mfLHTDJQ3W FcfsqneJQIuEZ3I59OTopKyXrPSaAyvGWCK3yDq6mRyiXDGtv9cb/jCUCUBE130z OOyQI6hQrOe1xw6y8Uw9s8WRIMF5khuQzk057ddzSxlWf8KZHOL5mUVMWsP57zsy 9HSUxve0Cc+1J52ChjFnP/cTGylWht5vLe9ZnmWPq8Sz3HGpoLJaWChMJeU0ODSL 6BOGi0dtcJFx47nHdzxpiG6hrWRF4qHc1VYUghv3Mli12NSXpMp/eCrepBy+R99I /W9ScwS51C7cpSju3Dz6iXOrROMu8USjP5a8FY0TpNKDh7P9qHbN9SIQizxnxqtT dbfCcnQ4lHL0W+AFNIXYfMnHt0LkSmTmfZcW8o0g5Ptw++KrtJNr/+SlRycYLSpM cn8uW0GyWAxJPdYftw3eZrgQdj0Q5dBj940CtsIguwf3PfboEBHes7MamHt7GMg/ s3Wo3oTF3tYSCLjvxbe/ =hjvB -----END PGP SIGNATURE-----
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