An issue was discovered in the MQTT server in Contiki-NG before 4.2. The function parse_publish_vhdr() that parses MQTT PUBLISH messages with a variable length header uses memcpy to input data into a fixed size buffer. The allocated buffer can fit only MQTT_MAX_TOPIC_LENGTH (default 64) bytes, and a length check is missing. This could lead to Remote Code Execution via a stack-smashing attack (overwriting the function return address). Contiki-NG does not separate the MQTT server from other servers and the OS modules, so access to all memory regions is possible.
References
Link | Resource |
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https://github.com/contiki-ng/contiki-ng/issues/600 | Exploit Third Party Advisory |
https://github.com/contiki-ng/contiki-ng/issues/600 | Exploit Third Party Advisory |
Configurations
History
21 Nov 2024, 03:57
Type | Values Removed | Values Added |
---|---|---|
References | () https://github.com/contiki-ng/contiki-ng/issues/600 - Exploit, Third Party Advisory |
Information
Published : 2018-11-21 20:29
Updated : 2024-11-21 03:57
NVD link : CVE-2018-19417
Mitre link : CVE-2018-19417
CVE.ORG link : CVE-2018-19417
JSON object : View
Products Affected
contiki-ng
- contiki-ng
CWE
CWE-119
Improper Restriction of Operations within the Bounds of a Memory Buffer