CVE-2020-14936
on github
Published
Severity
CVSS v3:
9.8 CRITICAL
CVSS v2:
7.5 HIGH
Description
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.
References
Configurations
CPE23 | Version Start | Version End | Exact Version |
---|---|---|---|
cpe:2.3:o:contiki-ng:contiki-ng:*:*:*:*:*:*:*:* | 4.4 (including) | 4.5 (including) | * |