What is CVE-2021-3746?

CVE-2021-3746 is a medium-severity vulnerability in Libtpms_project Libtpms, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 6.5/10. Published 2021-10-19.

How severe is CVE-2021-3746?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Buffer overflow in Libtpms_project Libtpms

CVE-2021-3746

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…

Vulnerability class: Buffer Overflow

EPSS: 0.009 (55.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H.

Affected products

Libtpms_project Libtpms
Fedoraproject Fedora — versions 34
Redhat Enterprise_linux — versions 8.0
N/a Libtpms — versions libtpms 0.8.5, libtpms 0.7.9, libtpms 0.6.6

Weakness classification (CWE)

CWE-119 — Improper Restriction of Operations within the Bounds of a Memory Buffer

References

secalert@redhat.com (Patch, Third Party Advisory, x_refsource_MISC, Issue Tracking)

Frequently asked questions

What is CVE-2021-3746?: CVE-2021-3746 is a medium-severity vulnerability in Libtpms_project Libtpms, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 6.5/10. Published 2021-10-19.
How severe is CVE-2021-3746?: Medium severity. CVSS v3 base score is 6.5 out of 10.