CVE-2021-4122

Description

It was found that a specially crafted LUKS header could trick cryptsetup into disabling encryption during the recovery of the device. An attacker with physical access to the medium, such as a flash disk, could use this flaw to force a user into permanently disabling the encryption layer of that medium.

Category

4.3
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.05%
Vendor Advisory kernel.org
Affected: n/a cryptsetup
Published at:
Updated at:

References

Link Tags
https://bugzilla.redhat.com/show_bug.cgi?id=2031859 third party advisory permissions required
https://mirrors.edge.kernel.org/pub/linux/utils/cryptsetup/v2.4/v2.4.3-ReleaseNotes release notes vendor advisory
https://gitlab.com/cryptsetup/cryptsetup/-/commit/0113ac2d889c5322659ad0596d4cfc6da53e356c third party advisory patch
https://bugzilla.redhat.com/show_bug.cgi?id=2032401 issue tracking third party advisory
https://access.redhat.com/security/cve/CVE-2021-4122 third party advisory

Frequently Asked Questions

What is the severity of CVE-2021-4122?
CVE-2021-4122 has been scored as a medium severity vulnerability.
How to fix CVE-2021-4122?
To fix CVE-2021-4122, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-4122 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-4122 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-4122?
CVE-2021-4122 affects n/a cryptsetup.
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