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
Link | Resource |
---|---|
https://drive.google.com/file/d/1FypWH_g475jSL0mDFzquaATCeRIHQ2kj/view?usp=sharing | Third Party Advisory |
https://github.com/contiki-ng/contiki-ng/issues/1351 | Third Party Advisory |
Configurations
History
No history.
Information
Published : 2020-08-18 17:15
Updated : 2024-02-28 17:47
NVD link : CVE-2020-14936
Mitre link : CVE-2020-14936
CVE.ORG link : CVE-2020-14936
JSON object : View
Products Affected
contiki-ng
- contiki-ng
CWE
CWE-787
Out-of-bounds Write