Comment 13 for bug 1190229
Revision history for this message
| Thierry Carrez (ttx) wrote Re: Potential unsafe XML usage | #13 |
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Proposed impact description:
Title: Denial of Service using XML entities in some Nova and Cinder extensions
Reporter: Grant Murphy (Red Hat)
Products: Nova, Cinder
Affects: Grizzly
Description:
Grant Murphy from Red Hat reported that vulnerabilities in XML request parsers were not fully patched in OSSA 2013-004. By leveraging XML entity expansion in specific extensions, an unauthenticated attacker may still consume excessive resources on the Nova or Cinder API servers, resulting in a denial of service and potentially a crash. Only Nova setups making use of the security group extension in Grizzly are affected. Only Cinder setups making use of the backups or volume transfer API extension in Grizzly are affected.