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CVE-2024-1543— AES T-Table sub-cache-line leakage

Quick assessment

Affected
wolfSSL wolfSSL
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.

wolfSSL（CyaSSL）是美国wolfSSL公司的一个针对嵌入式系统开发人员使用的小的、可移植的嵌入式SSL编程库。 WolfSSL 5.6.5之前版本存在安全漏洞，该漏洞源于在英特尔SGX等受控环境中，攻击者可以获得每条指令的子缓存行分辨率，从而破坏缓存行级别的保护。

CVSS 4.1 · Medium EPSS 0.18% · P7

Possible ATT&CK Techniques 1 AI

T1505.002 · Transport Agent
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I. Basic Information for CVE-2024-1543

Vulnerability Information
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Vulnerability Title
AES T-Table sub-cache-line leakage
Source: CVE Program / CVE List V5
Vulnerability Description
The side-channel protected T-Table implementation in wolfSSL up to version 5.6.5 protects against a side-channel attacker with cache-line resolution. In a controlled environment such as Intel SGX, an attacker can gain a per instruction sub-cache-line resolution allowing them to break the cache-line-level protection. For details on the attack refer to: https://doi.org/10.46586/tches.v2024.i1.457-500
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:N/A:N
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
wolfSSL 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
wolfSSL（CyaSSL）是美国wolfSSL公司的一个针对嵌入式系统开发人员使用的小的、可移植的嵌入式SSL编程库。 WolfSSL 5.6.5之前版本存在安全漏洞，该漏洞源于在英特尔SGX等受控环境中，攻击者可以获得每条指令的子缓存行分辨率，从而破坏缓存行级别的保护。
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
wolfSSL wolfSSL 0 ~ 5.6.5 -

II. Public POCs for CVE-2024-1543

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III. Intelligence Information for CVE-2024-1543

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Other References for CVE-2024-1543 (1)

Same Patch Batch · wolfSSL · 2024-08-29 · 3 CVEs total

CVE-2024-2881 6.7 MEDIUM Fault Injection of EdDSA signature in WolfCrypt
CVE-2024-1545 5.9 MEDIUM Fault Injection of RSA encryption in WolfCrypt

IV. Related Vulnerabilities

Same product: wolfSSL
Same vendor: wolfSSL
Same weakness: CWE-208

V. Comments for CVE-2024-1543

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