CVE-2013-1838: Medium severity red hat openstack essex vulnerability
OpenStack Compute (Nova) Grizzly, Folsom (2012.2), and Essex (2012.1) does not properly implement a quota for fixed IPs, which allows remote authenticated users to cause a denial of service (resource exhaustion and failure to spawn new instances) via a large number of calls to the addFixedIp function.
Other sources
Russel Bryant (rbryant) reports:
Title: DoS by allocating all Fixed IPs Impact: Medium Reporter: Vish Ishaya (Nebula) Products: Nova Affects: All versions
Description: Vish Ishaya reported a vulnerability in Nova where there is no quota for Fixed IPs. Previously the instance quota acted as a proxy for a Fixed IP quota, but if your configuration allows an instance to consume more than one Fixed IP via an extension such as multinic then this is no longer true. Running out of Fixed IPs would result in not being able to spawn new instances.
Proposed patches: See attached patches. Unless a flaw is discovered in them, these patches will be merged to Nova master (Grizzly), stable/folsom, and stable/essex branches on the public disclosure date.
— Red Hat
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2013-1838?
CVE-2013-1838 has a medium severity rating due to its potential to cause denial of service through resource exhaustion.
How do I fix CVE-2013-1838?
To fix CVE-2013-1838, update the Nova package to version 12.0.0a0 or later.
Which OpenStack versions are affected by CVE-2013-1838?
CVE-2013-1838 affects OpenStack Compute (Nova) versions Grizzly, Folsom, and Essex.
Can remote authenticated users exploit CVE-2013-1838?
Yes, remote authenticated users can exploit CVE-2013-1838 to cause a denial of service.
What component is primarily affected by CVE-2013-1838?
CVE-2013-1838 primarily affects the addFixedIp functionality in OpenStack Compute (Nova).