Vulnerability Details : CVE-2020-24455
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.
Products affected by CVE-2020-24455
- cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
- Tpm2 Software Stack Project » Tpm2 Software StackVersions from including (>=) 3.0.0 and before (<) 3.0.1cpe:2.3:a:tpm2_software_stack_project:tpm2_software_stack:*:*:*:*:*:*:*:*
- cpe:2.3:a:tpm2_software_stack_project:tpm2_software_stack:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2020-24455
0.05%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 12 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2020-24455
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
4.6
|
MEDIUM | AV:L/AC:L/Au:N/C:P/I:P/A:P |
3.9
|
6.4
|
NIST | |
|
6.7
|
MEDIUM | CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H |
0.8
|
5.9
|
NIST |
CWE ids for CVE-2020-24455
-
The product does not initialize a critical resource.Assigned by: nvd@nist.gov (Primary)
References for CVE-2020-24455
-
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/7KPOENCMJU4DMT3BDNUBRK25B3DJ47UO/
[SECURITY] Fedora 34 Update: tpm2-tss-3.1.0-1.fc34 - package-announce - Fedora Mailing-ListsMailing List;Third Party Advisory
-
https://security.gentoo.org/glsa/202107-10
TCG TPM2 Software Stack: Information disclosure (GLSA 202107-10) — Gentoo securityThird Party Advisory
-
https://github.com/tpm2-software/tpm2-tss/releases/tag/2.4.3
Release 2.4.3 · tpm2-software/tpm2-tss · GitHubRelease Notes;Third Party Advisory
-
https://bugzilla.redhat.com/show_bug.cgi?id=1902167
1902167 – (CVE-2020-24455) CVE-2020-24455 tpm2-tss: FAPI PolicyPCR not instatiating correctlyIssue Tracking;Patch;Third Party Advisory
-
https://github.com/tpm2-software/tpm2-tss/releases/tag/3.0.1
Release 3.0.1 · tpm2-software/tpm2-tss · GitHubRelease Notes;Third Party Advisory
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