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PYSEC-2026-879

OpenStack Nova Denial of Service in network source security groups

Quick fix

PYSEC-2026-879 — nova: upgrade to the fixed version with the command below.

pip install --upgrade 'nova>=12.0.0a0'

Details

Algorithmic complexity vulnerability in OpenStack Compute (Nova) before 2013.1.3 and Havana before havana-3 does not properly handle network source security group policy updates, which allows remote authenticated users to cause a denial of service (nova-network consumption) via a large number of server-creation operations, which triggers a large number of update requests.

Are you affected?

Enter the version of the package you're using.

Affected packages

PyPI/nova

Introduced in: 0Fixed in: 12.0.0a0

Fixpip install --upgrade 'nova>=12.0.0a0'

References

https://nvd.nist.gov/vuln/detail/CVE-2013-4185[ADVISORY]
https://bugs.launchpad.net/nova/+bug/1184041[WEB]
https://github.com/openstack/nova[PACKAGE]
http://github.com/openstack/nova/commit/52ad911963da4095b213952dee3a430fe0c4c30f[WEB]
http://github.com/openstack/nova/commit/85aac04704350566d6b06aa7a3b99649946c672c[WEB]
http://github.com/openstack/nova/commit/d4ee081c5c0a5132781235177c430ebcf72b0b0b[WEB]
http://rhn.redhat.com/errata/RHSA-2013-1199.html[WEB]
http://seclists.org/oss-sec/2013/q3/282[WEB]
https://pypi.org/project/nova[PACKAGE]
https://github.com/advisories/GHSA-ph2h-hh49-vh27[ADVISORY]