Friday, June 14, 2024

SweynTooth – 11 Bluetooth Bugs That Affected SoC Vendors Let Hackers to Crash The Device & Execute the Code Remotely

A group of security researchers uncovered a 12 Bluetooth based vulnerabilities dubbed “SweynTooth” in BLE software development kits of seven major system-on-a-chip (SoC) vendors.

 BLE ( Bluetooth Low Energy) a technology developed for wireless communication with a set of many standardized protocols that provide remote connectivity and also specifically handles the battery life of the device different power consumption and usage capabilities.

We have recently reported another critical Bluetooth vulnerability discovered in the Android Bluetooth system that allows remote attackers to silently execute arbitrary code remotely and take the complete device control.

Now researchers from Singapore University of Technology and Design reported the new set of vulnerabilities in BLE SoC implementations allow attackers to perform deadlocks, crashes and buffer overflow or completely bypass security within the radio range and the different circumstances.

Also, SweynTooth vulnerabilities affected various IoT products in appliances such as smart-homes, wearables and environmental tracking or sensing, medical and logistics products.

Some of the vulnerable IoT products

Vulnerable BLE SDKs sold by seven vendors of the following:

  • Texas Instruments
  • NXP
  • Cypress
  • Dialog Semiconductors
  • Microchip
  • STMicroelectronics
  • Telink Semiconductor

Type of Vulnerabilities

There are 3 types of major SweynTooth flaw identified in this research and each vulnerability impact the devices in different ways,

Crash :

Six Bluetooth vulnerabilities are addressed that lead to crash a device once the attacker triggers the vulnerabilities due to some incorrect code behavior or memory corruption.

According to the finding report, “when a buffer overflow on BLE reception buffer occurs. When a device crash occurs, they usually restart. However, such a restart capability depends on whether a correct hard fault handling mechanism was implemented in the product that uses the vulnerable BLE SoC.”

This vulnerability affected the vendors including Cypress, NXP, Dialog Semiconductors, Texas Instruments, Microchip, Telink Semiconductor.


There are 3 vulnerabilities related to Deadlock type that affect the availability of the BLE connection without causing a hard fault or memory corruption.

Researchers explain that they usually occurred due to some improper synchronization between user code and the SDK firmware distributed by the SoC vendor, leaving the user code being stuck at some point.

There are 3 Vendors affected by these vulnerabilities: Cypress, NXP, STMicroelectronics.

3. Security Bypass:

Security bypass type Bluetooth vulnerability in SweynTooth consider as a “Critical” one and the vulnerability allows attackers in radio range to bypass the latest secure pairing mode of BLE.

Successfully exploit this vulnerability allow attack to perform an arbitrary read or write access to the device’s functions remotely.

Attackers also perform smart luggage lock that can be remotely locked or unlocked through a smartphone app.

This Zero LTK Installation security bypass Bluetooth vulnerability ( CVE-2019-19194 ) affected only Zero LTK Installation.

You can also read the detailed and in-depth technical details here.


Latest articles

Sleepy Pickle Exploit Let Attackers Exploit ML Models And Attack End-Users

Hackers are targeting, attacking, and exploiting ML models. They want to hack into these...

SolarWinds Serv-U Vulnerability Let Attackers Access sensitive files

SolarWinds released a security advisory for addressing a Directory Traversal vulnerability which allows a...

Smishing Triad Hackers Attacking Online Banking, E-Commerce AND Payment Systems Customers

Hackers often attack online banking platforms, e-commerce portals, and payment systems for illicit purposes.Resecurity...

Threat Actor Claiming Leak Of 5 Million Ecuador’s Citizen Database

A threat actor has claimed responsibility for leaking the personal data of 5 million...

Ascension Hack Caused By an Employee Who Downloaded a Malicious File

Ascension, a leading healthcare provider, has made significant strides in its investigation and recovery...

AWS Announced Malware Detection Tool For S3 Buckets

Amazon Web Services (AWS) has announced the general availability of Amazon GuardDuty Malware Protection...

Hackers Exploiting MS Office Editor Vulnerability to Deploy Keylogger

Researchers have identified a sophisticated cyberattack orchestrated by the notorious Kimsuky threat group.The...
BALAJI is an Ex-Security Researcher (Threat Research Labs) at Comodo Cybersecurity. Editor-in-Chief & Co-Founder - Cyber Security News & GBHackers On Security.

Free Webinar

API Vulnerability Scanning

71% of the internet traffic comes from APIs so APIs have become soft targets for hackers.Securing APIs is a simple workflow provided you find API specific vulnerabilities and protect them.In the upcoming webinar, join Vivek Gopalan, VP of Products at Indusface as he takes you through the fundamentals of API vulnerability scanning..
Key takeaways include:

  • Scan API endpoints for OWASP API Top 10 vulnerabilities
  • Perform API penetration testing for business logic vulnerabilities
  • Prioritize the most critical vulnerabilities with AcuRisQ
  • Workflow automation for this entire process

Related Articles