Date: Thu, 12 Apr 2012 21:49:22 +1000 From: David Black <disclosure@....org> To: oss-security@...ts.openwall.com Subject: Re: CVE request: cobbler lack of csrf protection, code execution On Thu, Apr 12, 2012 at 9:46 PM, Jan Lieskovsky <jlieskov@...hat.com> wrote: > Thank you for this post, David. > > Just administrative note -- all of these security issues should > get CVE-2011-* CVE identifiers, as all of the Ubuntu bugs have > been reported in 2011 yet (2011-09-28 exactly). > > > On 04/12/2012 11:39 AM, David Black wrote: >> >> Hi, I reported some bugs a while ago in cobbler which never received >> CVE ID, could the follow bugs receive CVE ID ? >> 1. lack of csrf protection in the cobbler web interface (vulnerable to >> csrf attacks) >> https://bugs.launchpad.net/ubuntu/oneiric/+source/cobbler/+bug/858878 > > > Some further references / patches information I was able to found: > 1) Ubuntu patch by Robie Basak: > > http://bazaar.launchpad.net/~racb/ubuntu/oneiric/cobbler/858878_858883/revision/53 > > 2) Red Hat bugzilla entry: > https://bugzilla.redhat.com/show_bug.cgi?id=811937 > > >> 2. code execution on the cobbler host through use of yaml.loads on >> potentially untrusted user input >> https://bugs.launchpad.net/ubuntu/oneiric/+source/cobbler/+bug/858883 > > > Though only yaml.load privilege escalation vector has been mentioned in this > post, from further look noticed two ways for privilege escalation: > 1) (possibly remote) privilege escalation via yaml.load / by > processing management parameters: > > References: > https://bugs.launchpad.net/ubuntu/oneiric/+source/cobbler/+bug/858883 > (Ubuntu bug) > > Ubuntu patch from Robie Basak: > * Backport safe YAML load from upstream. (LP: #858883): > > http://bazaar.launchpad.net/~racb/ubuntu/oneiric/cobbler/858878_858883/revision/54 > > https://bugzilla.redhat.com/show_bug.cgi?id=811920 (Red Hat bug) > > 2) local privilege escalation due to insecure use of PYTHON_EGG_CACHE > location: > > References: > https://bugs.launchpad.net/ubuntu/+source/cobbler/+bug/858875 (Ubuntu bug) > https://fedorahosted.org/cobbler/ticket/688 (upstream ticket) > > https://d-feet.fedorahosted.org/cobbler/attachment/ticket/688/58_fix_egg_cache.patch > (relevant upstream patch) > https://bugzilla.redhat.com/show_bug.cgi?id=811926 (Red Hat bug) > > Kurt, could you allocate three 2011 CVE ids for these issues? > i) the first for CSRF issue, > ii) the second for the yaml.load priv esc issue, > iii) the third for the PYTHON_EGG_CACHE local priv esc issue > > David, would be great if you could confirm the three ids are necessary. I left the third one (the PYTHON_EGG_CACHE issue out) but it should probably get a CVE ID as well. Well what do you mean by 'necessary'? if you ask me I will say, "probably". -- David
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