PT-2020-14482 · Silicon · Silicon Labs Bluetooth Low Energy Sdk

Published 2020-08-16 · Updated 2020-08-24 · CVE-2020-15531

Positive Technologies (AI Summary)

CVSS v3.1

8.8

High

Base vector

AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions Silicon Labs Bluetooth Low Energy SDK versions prior to 2.13.3

Description The issue is related to a buffer overflow that can be triggered via packet data, leading to a remote code execution vulnerability in Bluetooth Low Energy (LE) for EFR32 SoCs and associated modules. This vulnerability affects devices running the Bluetooth SDK that support Central or Observer roles.

Recommendations For versions prior to 2.13.3, update to version 2.13.3 or later to resolve the issue. As a temporary workaround, consider restricting access to Bluetooth LE functionality to minimize the risk of exploitation.

Exploit

Fix

Buffer Overflow

Weakness Enumeration

CWE-120

Related Identifiers

CVE-2020-15531

Affected Products

Silicon Labs Bluetooth Low Energy Sdk

References · 7

• 🔥 https://github.com/darkmentorllc/jackbnimble/blob/master/host/pocs/silabs_efr32_extadv_rce.py · Exploit
• 🔥 https://youtube.com/watch?v=saoTr1NwdzM · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2020-15531 · Security Note
• https://osv.dev/vulnerability/CVE-2020-15531 · Vendor Advisory
• https://github.com/darkmentorllc/publications/tree/master/2020/TI_SILABS_BLE_RCEs · Note
• https://blackhat.com/us-20/briefings/schedule/#finding-new-bluetooth-low-energy-exploits-via-reverse-engineering-multiple-vendors-firmwares-19655 · Note
• https://t.me/cybersecuritytechnologies/1595 · Telegram Post