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CVE-2023-5342— Shim: expired secure boot certificate

Quick assessment

Affected
Red Hat Red Hat Enterprise Linux 10
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.

Red Hat Enterprise Linux是美国红帽（Red Hat）公司的面向企业用户的Linux操作系统。 Red Hat Enterprise Linux存在安全漏洞，该漏洞源于证书过期，可能导致加载无效启动组件。

CVSS 4.1 · Medium EPSS 0.08% · P0

Possible ATT&CK Techniques 1 AI

T1542.002 · Component Firmware
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I. Basic Information for CVE-2023-5342

Vulnerability Information
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Vulnerability Title
Shim: expired secure boot certificate
Source: CVE Program / CVE List V5
Vulnerability Description
The Fedora Secure Boot CA certificate shipped with shim in Fedora was expired which could lead to old or invalid signed boot components being loaded.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
使用已过期的密钥
Source: CVE Program / CVE List V5
Vulnerability Title
Red Hat Enterprise Linux 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Red Hat Enterprise Linux是美国红帽（Red Hat）公司的面向企业用户的Linux操作系统。 Red Hat Enterprise Linux存在安全漏洞，该漏洞源于证书过期，可能导致加载无效启动组件。
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
Red Hat Red Hat Enterprise Linux 10 - cpe:/o:redhat:enterprise_linux:10
Red Hat Red Hat Enterprise Linux 7 - cpe:/o:redhat:enterprise_linux:7
Red Hat Red Hat Enterprise Linux 8 - cpe:/o:redhat:enterprise_linux:8
Red Hat Red Hat Enterprise Linux 9 - cpe:/o:redhat:enterprise_linux:9

II. Public POCs for CVE-2023-5342

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III. Intelligence Information for CVE-2023-5342

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IV. Related Vulnerabilities

Same weakness: CWE-324

V. Comments for CVE-2023-5342

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