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CVE-2017-18191

UnknownEPSS 3.89%

Last modified

CVE-2017-18191 is a vulnerability of currently unknown severity. An issue was discovered in OpenStack Nova 15.x through 15.1.0 and 16.x through 16.1.1. By detaching and reattaching an encrypted volume, an attacker may access the underlying raw volume and corrupt the LUKS header, resulting in a denial of service attack on the compute host. EPSS estimates a 3.89% chance of exploitation in the next 30 days.

Description

An issue was discovered in OpenStack Nova 15.x through 15.1.0 and 16.x through 16.1.1. By detaching and reattaching an encrypted volume, an attacker may access the underlying raw volume and corrupt the LUKS header, resulting in a denial of service attack on the compute host. (The same code error also results in data loss, but that is not a vulnerability because the user loses their own data.) All Nova setups supporting encrypted volumes are affected.

Metrics

EPSS Probability
3.89%

88.9th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

VendorProductVersions
OpenstackNova>= 15.0.0, <= 15.1.0
OpenstackNova>= 16.0.0, <= 16.1.1
RedhatOpenstack9
RedhatOpenstack10
RedhatOpenstack12

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2017-18191?
An issue was discovered in OpenStack Nova 15.x through 15.1.0 and 16.x through 16.1.1. By detaching and reattaching an encrypted volume, an attacker may access the underlying raw volume and corrupt the LUKS header, resulting in a denial of service attack on the compute host. (The same code error also results in data loss, but that is not a vulnerability because the user loses their own data.) All Nova setups supporting encrypted volumes are affected.
How severe is CVE-2017-18191?
Severity scoring for CVE-2017-18191 is pending analysis. The EPSS model estimates a 3.89% probability of exploitation in the next 30 days.
How do I fix CVE-2017-18191?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2017-18191?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST