CVE-2022-23645
Versions prior to 0.5.3, 0.6.2, and 0.7.1 are vulnerable to out-of-bounds read.
Does this matter?
Lower severity and a low EPSS score (0.40%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 3.1
- 5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.40% probability · 34th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-125
- Affected
- swtpm project/swtpm · redhat/enterprise linux · fedoraproject/fedora
- Source
- security-advisories@github.com
References
- https://github.com/stefanberger/swtpm/commit/9f740868fc36761de27df3935513bdebf8852d19Patch, Third Party Advisory
- https://github.com/stefanberger/swtpm/releases/tag/v0.5.3Release Notes, Third Party Advisory
- https://github.com/stefanberger/swtpm/releases/tag/v0.6.2Release Notes, Third Party Advisory
- https://github.com/stefanberger/swtpm/releases/tag/v0.7.1Release Notes, Third Party Advisory
- https://github.com/stefanberger/swtpm/security/advisories/GHSA-2qgm-8xf4-3hqwPatch, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WL735FW266GO4C2JX4CJBOIOB7R7AY5A/
- https://github.com/stefanberger/swtpm/commit/9f740868fc36761de27df3935513bdebf8852d19Patch, Third Party Advisory
- https://github.com/stefanberger/swtpm/releases/tag/v0.5.3Release Notes, Third Party Advisory
- https://github.com/stefanberger/swtpm/releases/tag/v0.6.2Release Notes, Third Party Advisory
- https://github.com/stefanberger/swtpm/releases/tag/v0.7.1Release Notes, Third Party Advisory
- https://github.com/stefanberger/swtpm/security/advisories/GHSA-2qgm-8xf4-3hqwPatch, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WL735FW266GO4C2JX4CJBOIOB7R7AY5A/
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.