Vulnerability Description
A flaw was found in the libtpms code that may cause access beyond the boundary of internal buffers. The vulnerability is triggered by specially-crafted TPM2 command packets that then trigger the issue when the state of the TPM2's volatile state is written. The highest threat from this vulnerability is to system availability. This issue affects libtpms versions before 0.8.5, before 0.7.9 and before 0.6.6.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Libtpms Project | Libtpms | >= 0.6.0, < 0.6.6 |
| Fedoraproject | Fedora | 34 |
| Redhat | Enterprise Linux | 8.0 |
Related Weaknesses (CWE)
References
- https://bugzilla.redhat.com/show_bug.cgi?id=1998588Issue TrackingPatchThird Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1998588Issue TrackingPatchThird Party Advisory
FAQ
What is CVE-2021-3746?
CVE-2021-3746 is a vulnerability with a CVSS score of 6.5 (MEDIUM). A flaw was found in the libtpms code that may cause access beyond the boundary of internal buffers. The vulnerability is triggered by specially-crafted TPM2 command packets that then trigger the issue...
How severe is CVE-2021-3746?
CVE-2021-3746 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-3746?
Check the references section above for vendor advisories and patch information. Affected products include: Libtpms Project Libtpms, Fedoraproject Fedora, Redhat Enterprise Linux.