Moderate
CVE-2019-19192
CVE ID
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Moderate
(1 user assessed)
High
(1 user assessed)CVE-2019-19192
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 STMicroelectronics BLE Stack through 1.3.1 for STM32WB5x devices does not properly handle consecutive Attribute Protocol (ATT) requests on reception, allowing attackers in radio range to cause an event deadlock or crash via crafted packets.
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Ratings
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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 state, triggered by sending two consecutive Attribute Protocol (ATT) request packets during a connection event. If a watchdog or similar mechanism is enabled, an exploited target may restart without intervention (otherwise, a hard powercycle may be required). A detailed explanation can be found here in the original disclosure. It is unclear if the SoC manufacturer has issued 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
- st
Products
- bluenrg-2,
- wb55
References
Miscellaneous
Additional Info
Technical Analysis
Report as Emergent Threat Response
Report as Exploited in the Wild
CVE ID
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