Vulnerability Details CVE-2022-23645
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.0
EPSS Ranking 10.5%
CVSS Severity
CVSS v3 Score 6.2
CVSS v2 Score 2.1
References
- https://github.com/stefanberger/swtpm/commit/9f740868fc36761de27df3935513bdebf8852d19
- https://github.com/stefanberger/swtpm/releases/tag/v0.5.3
- https://github.com/stefanberger/swtpm/releases/tag/v0.6.2
- https://github.com/stefanberger/swtpm/releases/tag/v0.7.1
- https://github.com/stefanberger/swtpm/security/advisories/GHSA-2qgm-8xf4-3hqw
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WL735FW266GO4C2JX4CJBOIOB7R7AY5A/
- https://github.com/stefanberger/swtpm/commit/9f740868fc36761de27df3935513bdebf8852d19
- https://github.com/stefanberger/swtpm/releases/tag/v0.5.3
- https://github.com/stefanberger/swtpm/releases/tag/v0.6.2
- https://github.com/stefanberger/swtpm/releases/tag/v0.7.1
- https://github.com/stefanberger/swtpm/security/advisories/GHSA-2qgm-8xf4-3hqw
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WL735FW266GO4C2JX4CJBOIOB7R7AY5A/
Products affected by CVE-2022-23645
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cpe:2.3:a:swtpm_project:swtpm:0.1.0
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cpe:2.3:a:swtpm_project:swtpm:0.1.1
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cpe:2.3:a:swtpm_project:swtpm:0.2.0
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cpe:2.3:a:swtpm_project:swtpm:0.2.1
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cpe:2.3:a:swtpm_project:swtpm:0.3.0
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cpe:2.3:a:swtpm_project:swtpm:0.3.1
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cpe:2.3:a:swtpm_project:swtpm:0.3.2
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cpe:2.3:a:swtpm_project:swtpm:0.3.3
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cpe:2.3:a:swtpm_project:swtpm:0.3.4
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cpe:2.3:a:swtpm_project:swtpm:0.4.0
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cpe:2.3:a:swtpm_project:swtpm:0.4.1
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cpe:2.3:a:swtpm_project:swtpm:0.4.2
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cpe:2.3:a:swtpm_project:swtpm:0.5.0
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cpe:2.3:a:swtpm_project:swtpm:0.5.1
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cpe:2.3:a:swtpm_project:swtpm:0.5.2
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cpe:2.3:a:swtpm_project:swtpm:0.6.0
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cpe:2.3:a:swtpm_project:swtpm:0.6.1
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cpe:2.3:a:swtpm_project:swtpm:0.7.0
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cpe:2.3:o:fedoraproject:fedora:35
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cpe:2.3:o:redhat:enterprise_linux:8.0