CVSS: 9.8EPSS: 0%CPEs: 2EXPL: 0CVE-2019-8359
https://notcve.org/view.php?id=CVE-2019-8359
An issue was discovered in Contiki-NG through 4.3 and Contiki through 3.0. An out of bounds write is present in the data section during 6LoWPAN fragment re-assembly in the face of forged fragment offsets in os/net/ipv6/sicslowpan.c. Se detectó un problema en Contiki-NG versiones hasta 4.3 y Contiki versiones hasta 3.0. Una escritura fuera de límites está presente en la sección de datos durante el reensamblaje de fragmentos 6LoWPAN frente a las compensaciones de fragmentos forjados en el archivo os/net/ipv6/sicslowpan.c. • https://github.com/contiki-ng/contiki-ng/pull/972 https://github.com/contiki-ng/contiki-ng/releases/tag/release%2Fv4.4 https://www.usenix.org/system/files/sec20summer_clements_prepub.pdf • CWE-787: Out-of-bounds Write •
CVSS: 10.0EPSS: 1%CPEs: 1EXPL: 1CVE-2018-19417
https://notcve.org/view.php?id=CVE-2018-19417
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. • https://github.com/contiki-ng/contiki-ng/issues/600 • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer •