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CVE-2024-31142— x86: Incorrect logic for BTC/SRSO mitigations

Quick assessment

Affected
Xen Xen
Exploitation
High exploitation probability; assess promptly
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Xen是英国剑桥（Cambridge）大学的一款开源的虚拟机监视器产品。该产品能够使不同和不兼容的操作系统运行在同一台计算机上，并支持在运行时进行迁移，保证正常运行并且避免宕机。 Xen存在安全漏洞，该漏洞源于允许攻击者通过BTC/SRSO缓解措施绕过对Xen数据的访问限制，进而读取敏感信息。

AI Predicted 7.8 Difficulty: Hard EPSS 17.44% · P97

Possible ATT&CK Techniques 1 AI

T1203 · Exploitation for Client Execution
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I. Basic Information for CVE-2024-31142

Vulnerability Information
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Vulnerability Title
x86: Incorrect logic for BTC/SRSO mitigations
Source: CVE Program / CVE List V5
Vulnerability Description
Because of a logical error in XSA-407 (Branch Type Confusion), the mitigation is not applied properly when it is intended to be used. XSA-434 (Speculative Return Stack Overflow) uses the same infrastructure, so is equally impacted. For more details, see: https://xenbits.xen.org/xsa/advisory-407.html https://xenbits.xen.org/xsa/advisory-434.html
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Xen 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Xen是英国剑桥（Cambridge）大学的一款开源的虚拟机监视器产品。该产品能够使不同和不兼容的操作系统运行在同一台计算机上，并支持在运行时进行迁移，保证正常运行并且避免宕机。 Xen存在安全漏洞，该漏洞源于允许攻击者通过BTC/SRSO缓解措施绕过对Xen数据的访问限制，进而读取敏感信息。
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
Xen Xen consult Xen advisory XSA-455 -

II. Public POCs for CVE-2024-31142

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III. Intelligence Information for CVE-2024-31142

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Vendor Advisories for CVE-2024-31142 (1)

IV. Related Vulnerabilities

Same product: Xen
Same vendor: Xen

V. Comments for CVE-2024-31142

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