Home/CVE/An information leakage vulnerability in the Bluetooth Low Energy advertisement scan response in Bluetooth Core Specifica
CVE

CVE-2020-35473

An information leakage vulnerability in the Bluetooth Low Energy advertisement scan response in Bluetooth Core Specifica

An information leakage vulnerability in the Bluetooth Low Energy advertisement scan response in Bluetooth Core Specifications 4.0 through 5.2, and extended scan response in Bluetooth Core Specifications 5.0 through 5.2, may be used to identify devices using Resolvable Private Addressing (RPA) by their response or non-response to specific scan requests from remote addresses. RPAs that have been associated with a specific remote device may also be used to identify a peer in the same manner by using its reaction to an active scan request. This has also been called an allowlist-based side channel.

MEDIUM · CVSS 4.3 EPSS 0.00144
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  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-203Observable Discrepancy
CWE-294Authentication Bypass by Capture-replay
CWE-294Authentication Bypass by Capture-replay
▤

Affected Products & Versions

1
bluetooth core specification>= 4.0 and <= 5.2
▣

Scoring & Timeline

4.3
MEDIUM · CVSS v3.1 · cve@mitre.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD08 Nov 2022 · 06:15 AM
CVSS VectorCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
no
Technical impact
partial
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
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References & Sources

2
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://dl.acm.org/doi/10.1145/3548606.3559372Technical DescriptionThird Party Advisory
https://www.sigsac.org/ccs/CCS2022/proceedings/ccs-proceedings.htmlTechnical DescriptionThird Party Advisory
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