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CVE-2020-10135— Bluetooth devices supporting BR/EDR v5.2 and earlier are vulnerable to impersonation attacks

Quick assessment

Affected
Bluetooth BR/EDR
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Bluetooth BR/EDR是一种蓝牙BR/EDR（基本速率/增强数据速率）标准。 Bluetooth BR/EDR（Basic Rate/Enhanced Data Rate）Core Specification v5.2及之前版本中的旧式配对和安全连接配对认证存在授权问题漏洞。攻击者可借助蓝牙模拟攻击（BIAS）利用该漏洞获取访问权限。

CVSS 5.4 · Medium EPSS 2.37% · P84
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I. Basic Information for CVE-2020-10135

Vulnerability Information
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Vulnerability Title
Bluetooth devices supporting BR/EDR v5.2 and earlier are vulnerable to impersonation attacks
Source: CVE Program / CVE List V5
Vulnerability Description
Legacy pairing and secure-connections pairing authentication in Bluetooth BR/EDR Core Specification v5.2 and earlier may allow an unauthenticated user to complete authentication without pairing credentials via adjacent access. An unauthenticated, adjacent attacker could impersonate a Bluetooth BR/EDR master or slave to pair with a previously paired remote device to successfully complete the authentication procedure without knowing the link key.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在会话协商时选择低安全性的算法(算法降级)
Source: CVE Program / CVE List V5
Vulnerability Title
Bluetooth BR/EDR 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Bluetooth BR/EDR是一种蓝牙BR/EDR（基本速率/增强数据速率）标准。 Bluetooth BR/EDR（Basic Rate/Enhanced Data Rate）Core Specification v5.2及之前版本中的旧式配对和安全连接配对认证存在授权问题漏洞。攻击者可借助蓝牙模拟攻击（BIAS）利用该漏洞获取访问权限。
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
Bluetooth BR/EDR 5.2 ~ 5.2 -

II. Public POCs for CVE-2020-10135

# POC Description Source Link Shenlong Link
1 CVE 2020-10135 a.k.a BIAS (Bluetooth Impersonation Attack) https://github.com/marcinguy/CVE-2020-10135-BIAS POC Details
2 CVE 2020-10135 a.k.a BIAS (Bluetooth Impersonation Attack) https://github.com/m4rm0k/CVE-2020-10135-BIAS POC Details
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III. Intelligence Information for CVE-2020-10135

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Vendor Advisories for CVE-2020-10135 (1)

Exploits & Public PoCs for CVE-2020-10135 (1)

Mailing List Discussions for CVE-2020-10135 (3)

Security Blog Posts for CVE-2020-10135 (1)

Other References for CVE-2020-10135 (1)

IV. Related Vulnerabilities

Same product: BR/EDR
Same vendor: Bluetooth
Same weakness: CWE-757