CVE-2023-49721
Quick assessment
Affected
Canonical Ltd. LXD
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
EDK2是Tianocore社区的一套基于UEFI和PI规范的跨平台固件开发环境。 EDK2存在安全漏洞，该漏洞源于允许不安全的默认设置，使得攻击者能够绕过安全启动。
Possible ATT&CK Techniques 1 AI
T1484 · Domain or Tenant Policy Modification
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I. Basic Information for CVE-2023-49721
Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
EDK2 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
EDK2是Tianocore社区的一套基于UEFI和PI规范的跨平台固件开发环境。 EDK2存在安全漏洞，该漏洞源于允许不安全的默认设置，使得攻击者能够绕过安全启动。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Canonical Ltd. | LXD | 0 | - |
|
II. Public POCs for CVE-2023-49721
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2023-49721 (1)
-
https://nvd.nist.gov/vuln/detail/CVE-2023-48733 issue-tracking
Mailing List Discussions for CVE-2023-49721 (1)
Other References for CVE-2023-49721 (2)
-
https://bugs.launchpad.net/ubuntu/+source/lxd/+bug/2040139 issue-tracking
-
https://bugs.launchpad.net/ubuntu/+source/edk2/+bug/2040137 issue-tracking
IV. Related Vulnerabilities
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CVE-2026-85526
Path traversal via Btrfs optimized-backup subvolumes[].path
V. Comments for CVE-2023-49721
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