CVE-2021-3565
5.9
MEDIUM
CVSS 3.1
EPSS 1.3%
Description
A flaw was found in tpm2-tools in versions before 5.1.1 and before 4.3.2. tpm2_import used a fixed AES key for the inner wrapper, potentially allowing a MITM attacker to unwrap the inner portion and reveal the key being imported. The highest threat from this vulnerability is to data confidentiality.
How to fix CVE-2021-3565
To remediate CVE-2021-3565, upgrade the affected package to a fixed version below.
- Debian/tpm2-tools—upgrade to 5.0-2 or later
Is CVE-2021-3565 being exploited?
Low — EPSS is 1.3%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0, < 5.0-2
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM5.9 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N |