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3 vulnerabilities found for mbed-os by arm
VAR-201911-0589
Vulnerability from variot - Updated: 2025-01-30 21:12A denial-of-service issue was discovered in the MQTT library in Arm Mbed OS 2017-11-02. The function readMQTTLenString() is called by the function MQTTDeserialize_publish() to get the length and content of the MQTT topic name. In the function readMQTTLenString(), mqttstring->lenstring.len is a part of user input, which can be manipulated. An attacker can simply change it to a larger value to invalidate the if statement so that the statements inside the if statement are skipped, letting the value of mqttstring->lenstring.data default to zero. Later, curn is accessed, which points to mqttstring->lenstring.data. On an Arm Cortex-M chip, the value at address 0x0 is actually the initialization value for the MSP register. It is highly dependent on the actual firmware. Therefore, the behavior of the program is unpredictable from this time on. ARM Mbed OS is a set of open source embedded operating systems dedicated to the Internet of Things by British ARM company. The MQTT library is one of the MQTT (Message Queue Telemetry Transmission Protocol) libraries. An attacker could exploit this vulnerability by changing mqttstring-> lenstring.len to a larger value to cause a denial of service
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CVE-2019-17210 (GCVE-0-2019-17210)
Vulnerability from nvd – Published: 2019-11-04 19:48 – Updated: 2024-08-05 01:33
VLAI
Summary
A denial-of-service issue was discovered in the MQTT library in Arm Mbed OS 2017-11-02. The function readMQTTLenString() is called by the function MQTTDeserialize_publish() to get the length and content of the MQTT topic name. In the function readMQTTLenString(), mqttstring->lenstring.len is a part of user input, which can be manipulated. An attacker can simply change it to a larger value to invalidate the if statement so that the statements inside the if statement are skipped, letting the value of mqttstring->lenstring.data default to zero. Later, curn is accessed, which points to mqttstring->lenstring.data. On an Arm Cortex-M chip, the value at address 0x0 is actually the initialization value for the MSP register. It is highly dependent on the actual firmware. Therefore, the behavior of the program is unpredictable from this time on.
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/ARMmbed/mbed-os/issues/11802 | x_refsource_CONFIRM |
Date Public
2019-11-03 00:00
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CVE-2019-17210 (GCVE-0-2019-17210)
Vulnerability from cvelistv5 – Published: 2019-11-04 19:48 – Updated: 2024-08-05 01:33
VLAI
Summary
A denial-of-service issue was discovered in the MQTT library in Arm Mbed OS 2017-11-02. The function readMQTTLenString() is called by the function MQTTDeserialize_publish() to get the length and content of the MQTT topic name. In the function readMQTTLenString(), mqttstring->lenstring.len is a part of user input, which can be manipulated. An attacker can simply change it to a larger value to invalidate the if statement so that the statements inside the if statement are skipped, letting the value of mqttstring->lenstring.data default to zero. Later, curn is accessed, which points to mqttstring->lenstring.data. On an Arm Cortex-M chip, the value at address 0x0 is actually the initialization value for the MSP register. It is highly dependent on the actual firmware. Therefore, the behavior of the program is unpredictable from this time on.
Severity
No CVSS data available.
CWE
- n/a
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/ARMmbed/mbed-os/issues/11802 | x_refsource_CONFIRM |
Date Public
2019-11-03 00:00
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