Medium
tpm2-tools — security advisory
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.
- Products
- tpm2-tools
- Affected versions
- 1.0.0+20160226.64b3334-0ubuntu1, 1.0.0+20160226.64b3334-0ubuntu2, 3.1.3-2, 4.0.1-1, 4.1-1, 4.1.1-1, 4.1.1-1ubuntu0.20.04.1, 5.0-2, 5.2-1, 5.2-1build1, 5.4-1, 5.6-1, 5.6-1build1, 5.6-1build3, 5.6-1build4, 5.7-1, 5.7-1build1, 5.7-1ubuntu1, 5.7-1ubuntu2
- Fixed versions
- Not specified
- CVEs
- CVE-2021-3565
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 01:00 UTC · Revision 1
Source evidence
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.
osv:UBUNTU-CVE-2021-3565
tpm2-tools
Fixed versions: Not specified
tpm2-tools
Fixed versions: Not specified
tpm2-tools
Fixed versions: Not specified
tpm2-tools
Fixed versions: Not specified
tpm2-tools
Fixed versions: Not specified
tpm2-tools
Fixed versions: Not specified
tpm2-tools
Fixed versions: Not specified
Complete source record
{
"id": "8d62dd282cceb6ce177eaf8d02927c9b08d22f2c318356a87db2f091301c232e",
"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2021-3565",
"method": "structured",
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"modified": "2026-10-17T12:56:20.989321944Z",
"provider": "osv",
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"references": [
"https://ubuntu.com/security/CVE-2021-3565",
"https://bugzilla.redhat.com/show_bug.cgi?id=1964427",
"https://github.com/tpm2-software/tpm2-tools/issues/2738",
"https://github.com/tpm2-software/tpm2-tools/commit/c069e4f179d5e6653a84fb236816c375dca82515",
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"source_id": "core-osv",
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"published_at": "2021-06-04T12:15:00+00:00"
}