Moderate
CVE-2019-17060
CVE ID
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Moderate
(1 user assessed)
High
(1 user assessed)CVE-2019-17060
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 (BLE) stack implementation on the NXP KW41Z (based on the MCUXpresso SDK with Bluetooth Low Energy Driver 2.2.1 and earlier) does not properly restrict the BLE Link Layer header and executes certain memory contents upon receiving a packet with a Link Layer ID (LLID) equal to zero. This allows attackers within radio range to cause deadlocks, cause anomalous behavior in the BLE state machine, or trigger a buffer overflow via a crafted BLE Link Layer frame.
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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 will leave the target in a deadlocked or non-functional state by sending the target a Link Layer ID packet with a value of 0. Device recovery may require a hard reset or powercycle, and a vulnerable device will immediately become vulnerable again once it enables BLE. A detailed explanation can be found here in the original disclosure. It appears the SoC manufacturer has issued fixes for their vulnerable SDK(s).
Related, the same researchers found an SoC from Cypress which also contained a similar vulnerability (CVE-2019-17061), also disclosed as part of SweynTooth.
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
- nxp
Products
- mcuxpresso 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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