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CVE-2023-20540

Quick assessment

Affected
AMD AMD Ryzen™ 3000 Series Desktop Processors
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.

AMD AMD RyzenTM 3000 Series Desktop Processors是美国AMD公司的桌面处理器。 AMD Ryzen™ 3000 Series Desktop Processors存在信息泄露漏洞，该漏洞源于ASP中的可观察时序差异，可能导致具有特权的攻击者对哈希消息认证码进行暴力破解攻击，造成任意消息输入，进而导致数据完整性损失。

AI Predicted 5.9 Difficulty: Moderate EPSS 0.15% · P4

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 6

VendorProduct Version RangeStatus
AMD AMD Ryzen™ 3000 Series Desktop Processors ComboAM4 1.0.0.E unaffected
ComboAM4v2PI 1.2.0.CA unaffected
AMD AMD Ryzen™ 5000 Series Desktop Processors ComboAM4v2PI 1.2.0.CA unaffected
AMD AMD Ryzen™ Threadripper™ 3000 Series Processors CastlePeakPI-SP3r3 1.0.0.C unaffected
AMD AMD Ryzen™ Threadripper™ PRO 3000WX Series Processors CastlePeakWSPI-sWRX8 1.0.0.E unaffected
AMD AMD Ryzen™ Threadripper™ PRO 5000 WX-Series Processors ChagallWSPI-sWRX8 1.0.0.9 unaffected
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I. Basic Information for CVE-2023-20540

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
An observable timing discrepancy in the ASP could allow a privileged attacker to perform a brute-force attack against the hash message authentication code, allowing arbitrary message input, potentially leading to a loss of data integrity.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:L/AC:H/AT:N/PR:H/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA: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
AMD Ryzen™ 3000 Series Desktop Processors 信息泄露漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
AMD AMD RyzenTM 3000 Series Desktop Processors是美国AMD公司的桌面处理器。 AMD Ryzen™ 3000 Series Desktop Processors存在信息泄露漏洞，该漏洞源于ASP中的可观察时序差异，可能导致具有特权的攻击者对哈希消息认证码进行暴力破解攻击，造成任意消息输入，进而导致数据完整性损失。
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
AMD AMD Ryzen™ 3000 Series Desktop Processors ComboAM4 1.0.0.E -
AMD AMD Ryzen™ 5000 Series Desktop Processors ComboAM4v2PI 1.2.0.CA -
AMD AMD Ryzen™ Threadripper™ 3000 Series Processors CastlePeakPI-SP3r3 1.0.0.C -
AMD AMD Ryzen™ Threadripper™ PRO 3000WX Series Processors CastlePeakWSPI-sWRX8 1.0.0.E -
AMD AMD Ryzen™ Threadripper™ PRO 5000 WX-Series Processors ChagallWSPI-sWRX8 1.0.0.9 -

II. Public POCs for CVE-2023-20540

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III. Intelligence Information for CVE-2023-20540

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Vendor Advisories for CVE-2023-20540 (1)

IV. Related Vulnerabilities

Same product: AMD Ryzen™ 3000 Series Desktop Processors
Same vendor: AMD
Same weakness: CWE-208

V. Comments for CVE-2023-20540

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