[Openstack-security] [Bug 1341954] Re: suds client subject to cache poisoning by local attacker
OpenStack Infra
1341954 at bugs.launchpad.net
Sun Aug 31 16:22:54 UTC 2014
Reviewed: https://review.openstack.org/116270
Committed: https://git.openstack.org/cgit/openstack/cinder/commit/?id=6a41fe9c5c98a14a355fa81b41aae2c4b0ce0a7b
Submitter: Jenkins
Branch: master
commit 6a41fe9c5c98a14a355fa81b41aae2c4b0ce0a7b
Author: Vipin Balachandran <vbala at vmware.com>
Date: Fri Aug 22 10:19:29 2014 +0530
VMware: Disable suds caching
The default cache implementation in suds store pickled objects in a
predictable path in /tmp which could lead to attacks. This patch
turns off suds caching to address this security issue.
Change-Id: I7daaa25a0677004e03896298e9c3026d5c33c6ac
Closes-Bug: #1341954
** Changed in: cinder
Status: In Progress => Fix Committed
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https://bugs.launchpad.net/bugs/1341954
Title:
suds client subject to cache poisoning by local attacker
Status in Cinder:
Fix Committed
Status in Gantt:
New
Status in OpenStack Compute (Nova):
New
Status in Oslo VMware library for OpenStack projects:
Fix Released
Status in OpenStack Security Advisories:
Won't Fix
Status in OpenStack Security Notes:
New
Bug description:
The suds project appears to be largely unmaintained upstream. The default cache implementation stores pickled objects to a predictable path in /tmp. This can be used by a local attacker to redirect SOAP requests via symlinks or run a privilege escalation / code execution attack via a pickle exploit.
cinder/requirements.txt:suds>=0.4
gantt/requirements.txt:suds>=0.4
nova/requirements.txt:suds>=0.4
oslo.vmware/requirements.txt:suds>=0.4
The details are available here -
https://bugzilla.redhat.com/show_bug.cgi?id=978696
(CVE-2013-2217)
Although this is an unlikely attack vector steps should be taken to
prevent this behaviour. Potential ways to fix this are by explicitly
setting the cache location to a directory created via
tempfile.mkdtemp(), disabling cache client.set_options(cache=None), or
using a custom cache implementation that doesn't load / store pickled
objects from an insecure location.
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