CVE-2022-20361

CRITICAL

Android - Remote Privilege Escalation via Bluetooth Cross-Transport Key Derivation Weakness

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2022-20361. PoCs published by francozappa.

AI-analyzed exploit summary This repository contains a proof-of-concept for the BLURtooth attack (CVE-2020-15802), which exploits Cross-Transport Key Derivation (CTKD) in Bluetooth Classic and Bluetooth Low Energy. The PoC demonstrates how an attacker can impersonate a device and overwrite pairing keys by downgrading the pairing procedure to Just Works.

Description

In btif_dm_auth_cmpl_evt of btif_dm.cc, there is a possible vulnerability in Cross-Transport Key Derivation due to Weakness in Bluetooth Standard. This could lead to remote escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-10 Android-11 Android-12 Android-12LAndroid ID: A-231161832

Exploits (1)

nomisec WORKING POC 19 stars
by francozappa · poc
https://github.com/francozappa/blur

This repository contains a proof-of-concept for the BLURtooth attack (CVE-2020-15802), which exploits Cross-Transport Key Derivation (CTKD) in Bluetooth Classic and Bluetooth Low Energy. The PoC demonstrates how an attacker can impersonate a device and overwrite pairing keys by downgrading the pairing procedure to Just Works.

Classification
Working Poc 95%
Attack Type
Auth Bypass
Complexity
Moderate
Reliability
Reliable
Target: Bluetooth devices supporting Bluetooth 4.2+ and Secure Connections
No auth needed
Prerequisites: Bluetooth devices supporting BT/BLE and CTKD · Linux machine with bluez and btmgmt tools · Physical proximity to target devices
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (1)

Core 1
Core References
Patch, Vendor Advisory x_refsource_misc
https://source.android.com/security/bulletin/2022-08-01

Scores

CVSS v3 9.8
EPSS 0.0090
EPSS Percentile 55.0%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable no
Technical Impact total

Details

CWE
CWE-269
Status published
Products (4)
google/android 10.0
google/android 11.0
google/android 12.0
google/android 12.1
Published Aug 10, 2022
Tracked Since Feb 18, 2026