CVE-2020-14936

CVSS V2 High 7.5 CVSS V3 Critical 9.8
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.
Overview
  • CVE ID
  • CVE-2020-14936
  • Assigner
  • cve@mitre.org
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2020-08-18T17:15:11
  • Last Modified Date
  • 2020-08-25T19:43:58
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
cpe:2.3:o:contiki-ng:contiki-ng:*:*:*:*:*:*:*:* 1 OR 4.4 4.5
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:N/AC:L/Au:N/C:P/I:P/A:P
  • Access Vector
  • NETWORK
  • Access Compatibility
  • LOW
  • Authentication
  • NONE
  • Confidentiality Impact
  • PARTIAL
  • Integrity Impact
  • PARTIAL
  • Availability Impact
  • PARTIAL
  • Base Score
  • 7.5
  • Severity
  • HIGH
  • Exploitability Score
  • 10
  • Impact Score
  • 6.4
CVSS Version 3
  • Version
  • 3.1
  • Vector String
  • CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
  • Attack Vector
  • NETWORK
  • Attack Compatibility
  • LOW
  • Privileges Required
  • NONE
  • User Interaction
  • NONE
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • HIGH
  • Availability Impact
  • HIGH
  • Base Score
  • 9.8
  • Base Severity
  • CRITICAL
  • Exploitability Score
  • 3.9
  • Impact Score
  • 5.9
History
Created Old Value New Value Data Type Notes
2022-05-10 16:28:27 Added to TrackCVE
2022-12-04 21:15:46 2020-08-18T17:15Z 2020-08-18T17:15:11 CVE Published Date updated
2022-12-04 21:15:46 2020-08-25T19:43:58 CVE Modified Date updated
2022-12-04 21:15:46 Analyzed Vulnerability Status updated