CVE-2021-3623

Description

A flaw was found in libtpms. The flaw can be triggered by specially-crafted TPM 2 command packets containing illegal values and may lead to an out-of-bounds access when the volatile state of the TPM 2 is marshalled/written or unmarshalled/read. The highest threat from this vulnerability is to system availability.

Category

6.1
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.03%
Vendor Advisory fedoraproject.org
Affected: n/a libtpms
Published at:
Updated at:

References

Link Tags
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Z7KZSYMTE7Z4BBEZUWO2DIMQDWMGEP46/ vendor advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1976806 issue tracking third party advisory patch
https://github.com/stefanberger/libtpms/pull/223 issue tracking third party advisory
https://github.com/stefanberger/libtpms/commit/2f30d62 third party advisory patch
https://github.com/stefanberger/libtpms/commit/7981d9a third party advisory patch
https://github.com/stefanberger/libtpms/commit/2e6173c third party advisory patch

Frequently Asked Questions

What is the severity of CVE-2021-3623?
CVE-2021-3623 has been scored as a medium severity vulnerability.
How to fix CVE-2021-3623?
To fix CVE-2021-3623, 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-2021-3623 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-3623 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-2021-3623?
CVE-2021-3623 affects n/a libtpms.
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