CVE-2018-19417

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Summary

CVECVE-2018-19417
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2018-11-21 20:29:00 UTC
Updated2019-02-04 18:19:00 UTC
DescriptionAn 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.

Risk And Classification

Problem Types: CWE-119

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Contiki-ng Contiki-ng All All All All
Application Contiki-ng Contiki-ng All All All All

References

ReferenceSourceLinkTags
Stack based buffer overflow while parsing MQTT messages (parsing PUBLISH message with variable length header) · Issue #600 · contiki-ng/contiki-ng · GitHub MISC github.com Exploit, Third Party Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

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