CVE-2022-23645

MEDIUM

Published 2022-02-18T20:50:10.000Z

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CVSS Score

V3.1

6.2

/10

CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Base Score Metrics

Exploitability: N/A Impact: N/A

EPSS Score

v2025.03.14

0.000

probability

of exploitation in the wild

There is a 0.0% chance that this vulnerability will be exploited in the wild within the next 30 days.

Updated: 2025-06-25

Exploit Probability

Percentile: 0.040

Higher than 4.0% of all CVEs

Attack Vector Metrics

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Impact Metrics

Confidentiality

NONE

Integrity

NONE

Availability

HIGH

Description

swtpm is a libtpms-based TPM emulator with socket, character device, and Linux CUSE interface. Versions prior to 0.5.3, 0.6.2, and 0.7.1 are vulnerable to out-of-bounds read. A specially crafted header of swtpm's state, where the blobheader's hdrsize indicator has an invalid value, may cause an out-of-bounds access when the byte array representing the state of the TPM is accessed. This will likely crash swtpm or prevent it from starting since the state cannot be understood. Users should upgrade to swtpm v0.5.3, v0.6.2, or v0.7.1 to receive a patch. There are currently no known workarounds.