RCE in Canonical Ltd. Ubuntu Edk Ii
CVE-2023-48733
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.
EPSS: 0.003 (16.9th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.7 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Canonical Ltd. Ubuntu Edk Ii — versions 0
- Tianocore Edk2
- Canonical Lxd — versions 5.0, 5.21
- Debian Debian_linux — versions 10.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security@ubuntu.com (issue-tracking, Issue Tracking)
- security@ubuntu.com (issue-tracking, Third Party Advisory)
- security@ubuntu.com (mailing-list, Mailing List)
- security@ubuntu.com (issue-tracking, Issue Tracking)
- security@ubuntu.com (Mailing List)
Frequently asked questions
- What is CVE-2023-48733?
- CVE-2023-48733 is a medium-severity vulnerability in Canonical Ltd. Ubuntu Edk Ii, classified under Initialization of a Resource with an Insecure Default. CVSS score: 6.7/10. Published 2024-02-14.
- How severe is CVE-2023-48733?
- Medium severity. CVSS v3 base score is 6.7 out of 10.
- Is CVE-2023-48733 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.