Ubuntu.comUB:CVE-2023-48733CVE-2023-48733
6.7 Medium
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
6.8 Medium
AI Score
Confidence
High
0.0004 Low
EPSS
Percentile
15.7%
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.
Bugs
| OS | Version | Architecture | Package | Version | Filename |
|---|---|---|---|---|---|
| ubuntu | 18.04 | noarch | edk2 | < any | UNKNOWN |
| ubuntu | 20.04 | noarch | edk2 | < 0~20191122.bd85bf54-2ubuntu3.5 | UNKNOWN |
| ubuntu | 22.04 | noarch | edk2 | < 2022.02-3ubuntu0.22.04.2 | UNKNOWN |
| ubuntu | 23.10 | noarch | edk2 | < 2023.05-2ubuntu0.1 | UNKNOWN |
| ubuntu | 24.04 | noarch | edk2 | < 2023.11-7 | UNKNOWN |
| ubuntu | 16.04 | noarch | edk2 | < any | UNKNOWN |
References
bugs.launchpad.net/ubuntu/+source/lxd/+bug/2040139
launchpad.net/bugs/cve/CVE-2023-48733
nvd.nist.gov/vuln/detail/CVE-2023-48733
security-tracker.debian.org/tracker/CVE-2023-48733
ubuntu.com/security/notices/USN-6638-1
www.cve.org/CVERecord?id=CVE-2023-48733
www.openwall.com/lists/oss-security/2024/02/14/4
Related
6.7 Medium
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
6.8 Medium
AI Score
Confidence
High
0.0004 Low
EPSS
Percentile
15.7%