CVE-2022-36763: Heap Buffer Overflow in Tcg2MeasureGptTable
First published: Tue Jan 09 2024(Updated: )
EDK2 is susceptible to a vulnerability in the Tcg2MeasureGptTable() function, allowing a user to trigger a heap buffer overflow via a local network. Successful exploitation of this vulnerability may result in a compromise of confidentiality, integrity, and/or availability.
Credit: infosec@edk2.groups.io infosec@edk2.groups.io
| Affected Software | Affected Version | How to fix |
|---|---|---|
| debian/edk2 | <=0~20181115.85588389-3+deb10u3<=2020.11-2+deb11u1<=2020.11-2+deb11u2<=2022.11-6 | 2022.11-6+deb12u1 2024.02-2 |
| ubuntu/edk2 | <0~20191122. | 0~20191122. |
| ubuntu/edk2 | <2022.02-3ubuntu0.22.04.2 | 2022.02-3ubuntu0.22.04.2 |
| ubuntu/edk2 | <2023.05-2ubuntu0.1 | 2023.05-2ubuntu0.1 |
| Tianocore EDK II | <=202311 |
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Reference Links
- https://github.com/tianocore/edk2/security/advisories/GHSA-xvv8-66cq-prwr
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/SJ42V7O7F4OU6R7QSQQECLB6LDHKZIMQ/
- https://bugzilla.tianocore.org/show_bug.cgi?id=4117
- https://security-tracker.debian.org/tracker/CVE-2022-36763
- https://launchpad.net/bugs/cve/CVE-2022-36763
- https://github.com/tianocore/edk2/pull/5264
- https://ubuntu.com/security/notices/USN-6638-1
- https://www.cve.org/CVERecord?id=CVE-2022-36763
- https://nvd.nist.gov/vuln/detail/CVE-2022-36763
- https://ubuntu.com/security/CVE-2022-36763
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2257591
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2257588
- https://access.redhat.com/errata/RHSA-2024:2264
- https://access.redhat.com/errata/RHSA-2024:3017
- https://bugzilla.redhat.com/show_bug.cgi?id=2257582
Frequently Asked Questions
What is the severity of CVE-2022-36763?
CVE-2022-36763 is considered a critical vulnerability due to its potential impact on confidentiality, integrity, and availability.
How do I fix CVE-2022-36763?
To mitigate CVE-2022-36763, users should update to the latest version of the EDK2 software as specified in the advisories.
What systems are affected by CVE-2022-36763?
CVE-2022-36763 affects the Tianocore EDK2 firmware and various Linux distributions such as Ubuntu and Debian.
What is the nature of the vulnerability in CVE-2022-36763?
The vulnerability in CVE-2022-36763 involves a heap buffer overflow that can be triggered via a local network.
Can CVE-2022-36763 be exploited remotely?
Yes, CVE-2022-36763 can be exploited remotely due to its local network attack vector.
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