VulnerabilityModified
CVE-2021-3623
The flaw can be triggered by specially-crafted TPM 2 command packets containing illegal values and may lead to an out-of-bounds access when the volatile state of the TPM 2 is marshalled/written or unmarshalled/read.
MEDIUM 6.1EPSS 0.32%
Does this matter?
Lower severity and a low EPSS score (0.32%). Track it; it rarely justifies an emergency change on its own.
Description
A flaw was found in libtpms. The flaw can be triggered by specially-crafted TPM 2 command packets containing illegal values and may lead to an out-of-bounds access when the volatile state of the TPM 2 is marshalled/written or unmarshalled/read. The highest threat from this vulnerability is to system availability.
- CVSS 3.1
- 6.1 MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:H
- EPSS
- 0.32% probability · 25th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-787
- Affected
- libtpms project/libtpms · redhat/enterprise linux · fedoraproject/fedora
- Source
- secalert@redhat.com
References
- https://bugzilla.redhat.com/show_bug.cgi?id=1976806Issue Tracking, Patch, Third Party Advisory
- https://github.com/stefanberger/libtpms/commit/2e6173cPatch, Third Party Advisory
- https://github.com/stefanberger/libtpms/commit/2f30d62Patch, Third Party Advisory
- https://github.com/stefanberger/libtpms/commit/7981d9aPatch, Third Party Advisory
- https://github.com/stefanberger/libtpms/pull/223Issue Tracking, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Z7KZSYMTE7Z4BBEZUWO2DIMQDWMGEP46/
- https://bugzilla.redhat.com/show_bug.cgi?id=1976806Issue Tracking, Patch, Third Party Advisory
- https://github.com/stefanberger/libtpms/commit/2e6173cPatch, Third Party Advisory
- https://github.com/stefanberger/libtpms/commit/2f30d62Patch, Third Party Advisory
- https://github.com/stefanberger/libtpms/commit/7981d9aPatch, Third Party Advisory
- https://github.com/stefanberger/libtpms/pull/223Issue Tracking, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Z7KZSYMTE7Z4BBEZUWO2DIMQDWMGEP46/
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.