CVSS: 9.8EPSS: 4%CPEs: 2EXPL: 0CVE-2020-24336
https://notcve.org/view.php?id=CVE-2020-24336
An issue was discovered in Contiki through 3.0 and Contiki-NG through 4.5. The code for parsing Type A domain name answers in ip64-dns64.c doesn't verify whether the address in the answer's length is sane. Therefore, when copying an address of an arbitrary length, a buffer overflow can occur. This bug can be exploited whenever NAT64 is enabled. Se detectó un problema en Contiki versiones hasta 3.0 y Contiki-NG versiones hasta 4.5. • https://us-cert.cisa.gov/ics/advisories/icsa-20-343-01 https://www.kb.cert.org/vuls/id/815128 • CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') •
CVSS: 8.2EPSS: 0%CPEs: 3EXPL: 0CVE-2020-24334
https://notcve.org/view.php?id=CVE-2020-24334
The code that processes DNS responses in uIP through 1.0, as used in Contiki and Contiki-NG, does not check whether the number of responses specified in the DNS packet header corresponds to the response data available in the DNS packet, leading to an out-of-bounds read and Denial-of-Service in resolv.c. El código que procesa las respuestas DNS en uIP versiones hasta 1.0, como es usado en Contiki y Contiki-NG, no verifica si el número de respuestas especificadas en el encabezado del paquete DNS corresponde a los datos de respuesta disponibles en el paquete DNS, lo que conlleva a una lectura fuera de límites y una Denegación de Servicio en el archivo resolv.c • https://us-cert.cisa.gov/ics/advisories/icsa-20-343-01 https://www.kb.cert.org/vuls/id/815128 • CWE-125: Out-of-bounds Read •
CVSS: 7.5EPSS: 0%CPEs: 1EXPL: 0CVE-2020-13988
https://notcve.org/view.php?id=CVE-2020-13988
An issue was discovered in Contiki through 3.0. An Integer Overflow exists in the uIP TCP/IP Stack component when parsing TCP MSS options of IPv4 network packets in uip_process in net/ipv4/uip.c. Se detectó un problema en Contiki versiones hasta 3.0. Se presenta un Desbordamiento de Enteros en el componente uIP TCP/IP Stack cuando se analizan las opciones TCP MSS de los paquetes de red IPv4 en la función uip_process en el archivo net/ipv4/uip.c • https://us-cert.cisa.gov/ics/advisories/icsa-20-343-01 https://www.kb.cert.org/vuls/id/815128 • CWE-190: Integer Overflow or Wraparound •
CVSS: 9.8EPSS: 0%CPEs: 1EXPL: 0CVE-2020-14936
https://notcve.org/view.php?id=CVE-2020-14936
Buffer overflows were discovered in Contiki-NG 4.4 through 4.5, in the SNMP agent. Functions parsing the OIDs in SNMP requests lack sufficient allocated target-buffer capacity verification when writing parsed OID values. The function snmp_oid_decode_oid() may overwrite memory areas beyond the provided target buffer, when called from snmp_message_decode() upon an SNMP request reception. Because the content of the write operations is externally provided in the SNMP requests, it enables a remote overwrite of an IoT device's memory regions beyond the allocated buffer. This overflow may allow remote overwrite of stack and statically allocated variables memory regions by sending a crafted SNMP request. • https://drive.google.com/file/d/1FypWH_g475jSL0mDFzquaATCeRIHQ2kj/view?usp=sharing https://github.com/contiki-ng/contiki-ng/issues/1351 • CWE-787: Out-of-bounds Write •
CVSS: 9.8EPSS: 0%CPEs: 1EXPL: 1CVE-2020-14935
https://notcve.org/view.php?id=CVE-2020-14935
Buffer overflows were discovered in Contiki-NG 4.4 through 4.5, in the SNMP bulk get request response encoding function. 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. When a bulk get request response is assembled, a stack buffer dedicated for OIDs (with a limited capacity) is allocated in snmp_engine_get_bulk(). When snmp_engine_get_bulk() is populating the stack buffer, an overflow condition may occur due to lack of input length validation. This makes it possible to overwrite stack regions beyond the allocated buffer, including the return address from the function. • https://drive.google.com/file/d/1qp3ZXaFRiR_imWg0lUbI7-D-hIT268EB/view?usp=sharing https://github.com/contiki-ng/contiki-ng/issues/1353 • CWE-787: Out-of-bounds Write •