CVE-2012-2101 Openstack Compute (Nova) Denial of service via network request that triggers large number of iptables rules

What is CVE-2012-2101?

CVE-2012-2101 is a low-severity denial of service vulnerability in n/a, published on 7 Jun 2012. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

Openstack Compute (Nova) Folsom, 2012.1, and 2011.3 does not limit the number of security group rules, which allows remote authenticated users with certain permissions to cause a denial of service (CPU and hard drive consumption) via a network request that triggers a large number of iptables rules.

Weakness: CWE-264

Which versions are affected by CVE-2012-2101?

2 open source packages ship an affected version, including nova. It affects 1 product.

Products include Openstack Nova.

How do I fix CVE-2012-2101?

Upgrade nova to 12.0.0a0 or later.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2012-2101 being exploited?

There is no known exploitation of CVE-2012-2101 in the wild and no public exploit code.

Other vulnerabilities in n/a

• CVE-2017-7214 OpenStack Nova logs sensitive context from notification exceptions Critical 9.8
• CVE-2017-17051 OpenStack Nova DoS by rebuilding the same instance with a new image multiple times High 8.6
• CVE-2020-17376 OpenStack Nova Live migration fails to update persistent domain XML High 8.3
• CVE-2017-18191 OpenStack Nova Denial of service attack on the compute host High 7.5
• CVE-2015-3280 OpenStack Compute (nova) allows remote authenticated users to cause a denial of service Medium 6.8

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2012-2101, GHSA-hq3f-9gf7-73r8.