CVE-2020-24455
First published: Fri Nov 27 2020(Updated: )
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.
Credit: secure@intel.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/tpm2-tss | <2.4.3 | 2.4.3 |
| CentOS Tpm2-tss | <2.4.3 | |
| CentOS Tpm2-tss | >=3.0.0<3.0.1 | |
| Red Hat Fedora | =34 |
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Reference Links
- https://github.com/tpm2-software/tpm2-tss/releases/tag/3.0.1
- https://github.com/tpm2-software/tpm2-tss/releases/tag/2.4.3
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1908235
- https://github.com/tpm2-software/tpm2-tss/pull/1857/commits/ba62a713d0aab39ac5975b7778e17274186b9464
- https://bugzilla.redhat.com/show_bug.cgi?id=1902167
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/7KPOENCMJU4DMT3BDNUBRK25B3DJ47UO/
- https://security.gentoo.org/glsa/202107-10
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7KPOENCMJU4DMT3BDNUBRK25B3DJ47UO/
Frequently Asked Questions
What is the severity of CVE-2020-24455?
CVE-2020-24455 has a high severity rating due to the potential for privilege escalation by a local attacker.
How do I fix CVE-2020-24455?
To fix CVE-2020-24455, upgrade the tpm2-tss package to version 2.4.3 or later.
Which versions of tpm2-tss are affected by CVE-2020-24455?
CVE-2020-24455 affects tpm2-tss versions prior to 2.4.3 and from 3.0.0 up to but not including 3.0.1.
Who can exploit CVE-2020-24455?
CVE-2020-24455 can potentially be exploited by privileged users with local access to the system.
What is the impact of CVE-2020-24455 on system security?
The impact of CVE-2020-24455 on system security includes potential escalation of privileges, which could allow attackers to gain unauthorized access to sensitive areas.
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