CVE-2023-49721

An insecure default to allow UEFI Shell in EDK2 was left enabled in LXD. This allows an OS-resident attacker to bypass Secure Boot.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
6.7 MEDIUM
LOCAL
LOW
HIGH
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
canonicalCNA
6.7 MEDIUM
LOCAL
LOW
HIGH
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
CVEADP
---
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CISA-ADPADP
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Base Score
CVSS 3.x
EPSS Score
Percentile: 2%
VendorProductVersion
canonicallxd
5.0.0 ≤
𝑥
< 5.21.0
tianocoreedk2
𝑥
≤ 2023.11-8
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
incus
trixie
6.0.3-1
fixed
sid
6.0.3-1
fixed
lxd
bookworm
5.0.2-5
fixed
trixie
5.0.2+git20231211.1364ae4-7
fixed
sid
5.0.2+git20231211.1364ae4-7
fixed
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
lxd
noble
dne
mantic
dne
lunar
dne
jammy
dne
focal
not-affected
bionic
not-affected
xenial
not-affected
trusty
ignored
Common Weakness Enumeration
References
https://bugs.launchpad.net/ubuntu/+source/edk2/+bug/2040137
https://bugs.launchpad.net/ubuntu/+source/lxd/+bug/2040139
https://nvd.nist.gov/vuln/detail/CVE-2023-48733
https://www.openwall.com/lists/oss-security/2024/02/14/4
https://bugs.launchpad.net/ubuntu/+source/edk2/+bug/2040137
https://bugs.launchpad.net/ubuntu/+source/lxd/+bug/2040139
https://nvd.nist.gov/vuln/detail/CVE-2023-48733
https://www.openwall.com/lists/oss-security/2024/02/14/4