Moderate
CVE-2019-17517
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Moderate
(1 user assessed)
High
(1 user assessed)CVE-2019-17517
MITRE ATT&CK
Collection
Command and Control
Credential Access
Defense Evasion
Discovery
Execution
Exfiltration
Impact
Initial Access
Lateral Movement
Persistence
Privilege Escalation
Topic Tags
Description
The Bluetooth Low Energy implementation on Dialog Semiconductor SDK through 5.0.4 for DA14580/1/2/3 devices does not properly restrict the L2CAP payload length, allowing attackers in radio range to cause a buffer overflow via a crafted Link Layer packet.
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Ratings
-
Attacker ValueMedium
-
ExploitabilityHigh
Technical Analysis
This vuln is part of a related batch named SweynTooth from researchers at the Singapore University of Technology and Design. The SweynTooth vulnerabilities lie within certain Bluetooth Low Energy (BLE) SDKs for Systems-on-a-Chip (SoC), which can make proliferating fixes to affected devices in the field a slow going.
Vulnerable devices need to be within BLE radio range in order for an attacker to target. A successful exploit can leave the target in a crashed state or force a restart, triggered by sending the vulnerable device Logical Link Control and Adaptation Layer Protocol (L2CAP) packets containing a Link Layer Length (LL Length) value less than L2CAP Length + 4, resulting in a Buffer Overflow (BOF) condition on the target. A detailed explanation can be found here in the original disclosure, as well as some potentially vulnerable devices in this list. Due to the nature of the vulnerability being a BOF leaves the door open for further exploration to potentially gain code execution on a vulnerable target. It appears the SoC manufacturer has issued some fixes for their vulnerable SDK(s).
EDIT: Attacker Value for this item largely depends on the type of device the vulnerable target is and behavior the device exhibits when successfully exploited.
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General Information
Vendors
- dialog-semiconductor
Products
- software development kit
References
Additional Info
Technical Analysis
Report as Emergent Threat Response
Report as Exploited in the Wild
CVE ID
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