CVE-2023-49721 — Incorrect Default Permissions in Edk2

CWE-276 — Incorrect Default Permissions4 documents4 sources
Severity
6.7MEDIUMNVD
EPSS
0.0%
top 96.38%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
3
Canonical LXDTianocore Edk2Canonical LTD LXD
Timeline
PublishedFeb 14
Latest updateFeb 15

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 vector

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:HExploitability: 0.8 | Impact: 5.9

Affected Packages3 packages

▶NVDtianocore/edk22023.11-8
▶NVDcanonical/lxd5.0.0 — 5.21.0
▶CVEListV5canonical_ltd/lxd0

🔴Vulnerability Details

2
GHSA
GHSA-4639-7gfm-29p2: An insecure default to allow UEFI Shell in EDK2 was left enabled in LXD↗2024-02-15
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CVEList
CVE-2023-49721: An insecure default to allow UEFI Shell in EDK2 was left enabled in LXD↗2024-02-14
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📋Vendor Advisories

1
Debian
CVE-2023-49721: incus - An insecure default to allow UEFI Shell in EDK2 was left enabled in LXD. This al...↗2023
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CVE-2023-49721 — Incorrect Default Permissions in Edk2 | cvebase