CVE-2023-48733

Description

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.

Category

6.7
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.01%
Affected: Canonical Ltd. Ubuntu EDK II
Published at:
Updated at:

References

Link Tags
https://bugs.launchpad.net/ubuntu/+source/edk2/+bug/2040137 issue tracking
https://nvd.nist.gov/vuln/detail/CVE-2023-48733 issue tracking
https://www.openwall.com/lists/oss-security/2024/02/14/4 mailing list
https://bugs.launchpad.net/ubuntu/+source/lxd/+bug/2040139 issue tracking
https://lists.debian.org/debian-lts-announce/2024/06/msg00028.html

Frequently Asked Questions

What is the severity of CVE-2023-48733?
CVE-2023-48733 has been scored as a medium severity vulnerability.
How to fix CVE-2023-48733?
To fix CVE-2023-48733, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2023-48733 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2023-48733 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2023-48733?
CVE-2023-48733 affects Canonical Ltd. Ubuntu EDK II.
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