CVE-2023-48733 Affecting edk2 package, versions <2020.11-2+deb11u2
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-DEBIAN11-EDK2-6247447
- published15 Feb 2024
- disclosed14 Feb 2024
Introduced: 14 Feb 2024
CVE-2023-48733 (opens in a new tab)How to fix?
Upgrade Debian:11 edk2 to version 2020.11-2+deb11u2 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream edk2 package and not the edk2 package as distributed by Debian.
See How to fix? for Debian:11 relevant fixed versions and status.
An insecure default to allow UEFI Shell in EDK2 was left enabled in Ubuntu's EDK2. This allows an OS-resident attacker to bypass Secure Boot.
References
- https://security-tracker.debian.org/tracker/CVE-2023-48733
- https://bugs.launchpad.net/ubuntu/+source/edk2/+bug/2040137
- https://bugs.launchpad.net/ubuntu/+source/lxd/+bug/2040139
- https://lists.debian.org/debian-lts-announce/2024/06/msg00028.html
- https://nvd.nist.gov/vuln/detail/CVE-2023-48733
- https://www.openwall.com/lists/oss-security/2024/02/14/4