CVSS: 9.8EPSS: 0%CPEs: 1EXPL: 1CVE-2020-14934
https://notcve.org/view.php?id=CVE-2020-14934
Buffer overflows were discovered in Contiki-NG 4.4 through 4.5, in the SNMP agent. The function parsing the received SNMP request does not verify the input message's requested variables against the capacity of the internal SNMP engine buffer. If the number of variables in the request exceeds the allocated buffer, a memory write out of the buffer boundaries occurs. This write operation provides a possibility to overwrite other variables allocated in the .bss section by the application. Because the sender of the frame is in control of the content that will be written beyond the buffer limits, and there is no strict process memory separation, this issue may allow overwriting of sensitive memory areas of an IoT device. • https://drive.google.com/file/d/1NIf0Y0S47Lu85uSi29kt9tgSh0jYZYfj/view?usp=sharing https://github.com/contiki-ng/contiki-ng/issues/1352 • CWE-787: Out-of-bounds Write •
CVSS: 9.1EPSS: 0%CPEs: 1EXPL: 1CVE-2020-14937
https://notcve.org/view.php?id=CVE-2020-14937
Memory access out of buffer boundaries issues was discovered in Contiki-NG 4.4 through 4.5, in the SNMP BER encoder/decoder. The length of provided input/output buffers is insufficiently verified during the encoding and decoding of data. This may lead to out-of-bounds buffer read or write access in BER decoding and encoding functions. Se detectaron problemas de acceso a la memoria fuera de límites del búfer en Contiki-NG versiones 4.4 hasta 4.5, en el encoder/decoder BER de SNMP. La longitud de los búferes de entrada/salida proporcionados no son verificados suficientemente durante la codificación y decodificación de datos. • https://drive.google.com/file/d/1mAkJBVZNv5PMVwLojru0njH38zEXpWui/view?usp=sharing https://github.com/contiki-ng/contiki-ng/issues/1354 • CWE-125: Out-of-bounds Read CWE-787: Out-of-bounds Write •
CVSS: 7.5EPSS: 0%CPEs: 2EXPL: 0CVE-2019-9183
https://notcve.org/view.php?id=CVE-2019-9183
An issue was discovered in Contiki-NG through 4.3 and Contiki through 3.0. A buffer overflow is present due to an integer underflow during 6LoWPAN fragment processing in the face of truncated fragments in os/net/ipv6/sicslowpan.c. This results in accesses of unmapped memory, crashing the application. An attacker can cause a denial-of-service via a crafted 6LoWPAN frame. Se descubrió un problema en Contiki-NG a través de 4.3 y Contiki a través de 3.0. • 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-191: Integer Underflow (Wrap or Wraparound) CWE-787: Out-of-bounds Write •
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: 7.1EPSS: 0%CPEs: 1EXPL: 0CVE-2018-20579
https://notcve.org/view.php?id=CVE-2018-20579
Contiki-NG before 4.2 has a stack-based buffer overflow in the push function in os/lib/json/jsonparse.c that allows an out-of-bounds write of an '{' or '[' character. Contiki-NG, en versiones anteriores a la 4.2, tiene un desbordamiento de búfer basado en pila en la función push en os/lib/json/jsonparse.c que permite una escritura fuera de límites de un carácter "{" o "[". • https://github.com/contiki-ng/contiki-ng/issues/601 • CWE-787: Out-of-bounds Write •