CVE-2016-2140

Severity: medium (CVSS 5.3 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.1% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2016-04-12 · updated 2026-06-17
Weakness: CWE-200

Description

The libvirt driver in OpenStack Compute (Nova) before 2015.1.4 (kilo) and 12.0.x before 12.0.3 (liberty), when using raw storage and use_cow_images is set to false, allows remote authenticated users to read arbitrary files via a crafted qcow2 header in an ephemeral or root disk.

Affected products

OpenStack Nova: from 12.0.0 before 12.0.3; from 2015.1.0 before 2015.1.4 — fixed in 12.0.3, 2015.1.4

How to fix

Upgrade to a fixed version: OpenStack Nova 12.0.3, 2015.1.4. Check the vendor advisory for mitigations.

References

http://www.openwall.com/lists/oss-security/2016/03/08/6
http://www.securityfocus.com/bid/84277
https://bugs.launchpad.net/nova/+bug/1548450
https://security.openstack.org/ossa/OSSA-2016-007.html
http://www.openwall.com/lists/oss-security/2016/03/08/6
http://www.securityfocus.com/bid/84277
https://bugs.launchpad.net/nova/+bug/1548450
https://security.openstack.org/ossa/OSSA-2016-007.html

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