CVE-2024-56738
Quick assessment
Affected
GNU GRUB2
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.
GNU GRUB（GRUB2）是GNU社区的一款Linux系统引导程序。 GNU GRUB 2.12及之前版本存在安全漏洞，该漏洞源于grub_crypto_memcmp未使用常量时间算法，从而允许侧信道攻击。
Possible ATT&CK Techniques 1 AI
T1216 · System Script Proxy Execution
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I. Basic Information for CVE-2024-56738
Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
GNU GRUB (aka GRUB2) through 2.12 does not use a constant-time algorithm for grub_crypto_memcmp and thus allows side-channel attacks.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
通过时间差异性导致的信息暴露
Source: CVE Program / CVE List V5
Vulnerability Title
GNU GRUB 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
GNU GRUB（GRUB2）是GNU社区的一款Linux系统引导程序。 GNU GRUB 2.12及之前版本存在安全漏洞，该漏洞源于grub_crypto_memcmp未使用常量时间算法，从而允许侧信道攻击。
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
II. Public POCs for CVE-2024-56738
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Vendor Advisories for CVE-2024-56738 (1)
IV. Related Vulnerabilities
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Same vendor: GNU
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V. Comments for CVE-2024-56738
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