CVE-2020-14936

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Summary

CVECVE-2020-14936
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2020-08-18 17:15:00 UTC
Updated2020-08-25 19:43:00 UTC
DescriptionBuffer 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.

Risk And Classification

Problem Types: CWE-787

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Contiki-ng Contiki-ng All All All All

References

ReferenceSourceLinkTags
Out of bounds memory read/write in SNMP agent · Issue #1351 · contiki-ng/contiki-ng · GitHub MISC github.com Third Party Advisory
v1_snmp-oid.c_oid_length.md - Google Drive MISC drive.google.com Third Party Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

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