CVE-2021-3623

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Summary

CVECVE-2021-3623
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2022-03-02 23:15:00 UTC
Updated2023-11-07 03:38:00 UTC
DescriptionA 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.

Risk And Classification

Problem Types: CWE-787

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Fedoraproject Fedora 34 All All All
Application Libtpms Project Libtpms All All All All
Operating System Redhat Enterprise Linux 8.0 All All All

References

ReferenceSourceLinkTags
[SECURITY] Fedora 34 Update: libtpms-0.8.4-1.20210624gita594c4692a.fc34.1 - package-announce - Fedora Mailing-Lists FEDORA lists.fedoraproject.org
tpm2: Add maxSize parameter to TPM2B_Marshal for sanity checks · stefanberger/libtpms@7981d9a · GitHub MISC github.com
1976806 – (CVE-2021-3623) CVE-2021-3623 libtpms: out-of-bounds access when trying to resume the state of the vTPM MISC bugzilla.redhat.com
tpm2: Restore original value if unmarsalled value was illegal · stefanberger/libtpms@2e6173c · GitHub MISC github.com
Reset buffer size indicators that are too large and check for maximum size on marshalling by stefanberger · Pull Request #223 · stefanberger/libtpms · GitHub MISC github.com
tpm2: Reset TPM2B buffer sizes after test fails for valid buffer size · stefanberger/libtpms@2f30d62 · GitHub MISC github.com
[SECURITY] Fedora 34 Update: libtpms-0.8.4-1.20210624gita594c4692a.fc34.1 - package-announce - Fedora Mailing-Lists lists.fedoraproject.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Legacy QID Mappings

  • 159724 Oracle Enterprise Linux Security Update for libtpms (ELSA-2022-9240)
  • 182922 Debian Security Update for libtpms (CVE-2021-3623)
  • 281671 Fedora Security Update for libtpms (FEDORA-2021-465b5c3b67)
  • 752991 SUSE Enterprise Linux Security Update for libtpms (SUSE-SU-2022:4457-1)

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