VulnerabilityAnalyzed
CVE-2023-49721
An insecure default to allow UEFI Shell in EDK2 was left enabled in LXD.
MEDIUM 6.7EPSS 0.24%
Does this matter?
Lower severity and a low EPSS score (0.24%). Track it; it rarely justifies an emergency change on its own.
Description
An insecure default to allow UEFI Shell in EDK2 was left enabled in LXD. This allows an OS-resident attacker to bypass Secure Boot.
- CVSS 3.1
- 6.7 MEDIUMCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.24% probability · 15th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-276
- Affected
- canonical/lxd · tianocore/edk2
- Source
- security@ubuntu.com
References
- https://bugs.launchpad.net/ubuntu/+source/edk2/+bug/2040137Issue Tracking
- https://bugs.launchpad.net/ubuntu/+source/lxd/+bug/2040139Issue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2023-48733Third Party Advisory
- https://www.openwall.com/lists/oss-security/2024/02/14/4Mailing List
- https://bugs.launchpad.net/ubuntu/+source/edk2/+bug/2040137Issue Tracking
- https://bugs.launchpad.net/ubuntu/+source/lxd/+bug/2040139Issue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2023-48733Third Party Advisory
- https://www.openwall.com/lists/oss-security/2024/02/14/4Mailing List
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.