OpenStack Security Advisory: 2012-011
CVE: CVE-2012-3447
Date: August 7, 2012
Title: Compute node filesystem injection/corruption
Impact: Critical
Reporter: Pádraig Brady (Red Hat)
Products: Nova
Affects: All versions
Description:
Pádraig Brady from Red Hat discovered that the fix implemented for
CVE-2012-3361 (OSSA-2012-008) was not covering all attack scenarios. By
crafting a malicious image with root-readable-only symlinks and
requesting a server based on it, an authenticated user could still
corrupt arbitrary files (all setups affected) or inject arbitrary files
(Essex and later setups with OpenStack API enabled and a libvirt-based
hypervisor) on the host filesystem, potentially resulting in full
compromise of that compute node.
Fixes:
References:
Launchpad Bug 1031311
Mitre CVE Entry
Notes:
This fix will be included in the upcoming Nova 2012.1.2 stable update
(due Thursday) and the Folsom-3 development milestone (due next week).