OSSA-2012-011: Compute node filesystem injection/corruption

Date:August 07, 2012
CVE:CVE-2012-3447

Affects

  • Nova: 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.

Credits

  • Pádraig Brady from Red Hat (CVE-2012-3447)