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CVE-2020-24455

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Date: February 25, 2021

Missing initialization of a variable in the TPM2 source may allow a privileged user to potentially enable an escalation of privilege via local access. This affects tpm2-tss before 3.0.1 and before 2.4.3.

Language: C

Severity Score

Related Resources (11)

https://github.com/tpm2-software/tpm2-tss/commit/9536b79cd5a13884a7e4de7a571f72530180c20b
https://security.gentoo.org/glsa/202107-10
https://github.com/tpm2-software/tpm2-tss/commit/bf24b0ef0fa8de9300a323f70a097a1afd818439
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/7KPOENCMJU4DMT3BDNUBRK25B3DJ47UO/
https://security-tracker.debian.org/tracker/CVE-2020-24455
https://github.com/tpm2-software/tpm2-tss/releases/tag/2.4.3
https://nvd.nist.gov/vuln/detail/CVE-2020-24455
https://bugzilla.redhat.com/show_bug.cgi?id=1902167
https://github.com/tpm2-software/tpm2-tss/releases/tag/3.0.1
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7KPOENCMJU4DMT3BDNUBRK25B3DJ47UO/
https://www.mend.io/vulnerability-database/CVE-2020-24455

Severity Score

Weakness Type (CWE)

Missing Initialization of Resource

CWE-909

CVSS v3.1

Base Score:
Attack Vector (AV): LOCAL
Attack Complexity (AC): LOW
Privileges Required (PR): HIGH
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): HIGH
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): LOCAL
Access Complexity (AC): LOW
Authentication (AU): NONE
Confidentiality (C): PARTIAL
Integrity (I): PARTIAL
Availability (A): PARTIAL
Additional information:

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