CVE-2021-3746
Last modified
CVE-2021-3746 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. 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. EPSS estimates a 0.89% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Libtpms Project | Libtpms | >= 0.6.0, < 0.6.6 |
| Libtpms Project | Libtpms | >= 0.7.0, < 0.7.9 |
| Libtpms Project | Libtpms | >= 0.8.0, < 0.8.5 |
| Fedoraproject | Fedora | 34 |
| Redhat | Enterprise Linux | 8.0 |
References
- https://bugzilla.redhat.com/show_bug.cgi?id=1998588Issue Tracking, Patch, Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1998588Issue Tracking, Patch, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
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