CVE-2021-20225

Description

A flaw was found in grub2 in versions prior to 2.06. The option parser allows an attacker to write past the end of a heap-allocated buffer by calling certain commands with a large number of specific short forms of options. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.

Category

6.7
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.10%
Vendor Advisory fedoraproject.org Vendor Advisory gentoo.org
Affected: n/a grub2
Published at:
Updated at:

References

Link Tags
https://bugzilla.redhat.com/show_bug.cgi?id=1924696 issue tracking third party advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZWZ36QK4IKU6MWDWNOOWKPH3WXZBHT2R/ vendor advisory
https://security.gentoo.org/glsa/202104-05 third party advisory vendor advisory
https://security.netapp.com/advisory/ntap-20220325-0001/ third party advisory

Frequently Asked Questions

What is the severity of CVE-2021-20225?
CVE-2021-20225 has been scored as a medium severity vulnerability.
How to fix CVE-2021-20225?
To fix CVE-2021-20225, 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-2021-20225 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-20225 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-2021-20225?
CVE-2021-20225 affects n/a grub2.
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