Contiki Ng
CVE-2021-21279
HIGH
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Lifecycle Timeline
1DescriptionNVD
Contiki-NG is an open-source, cross-platform operating system for internet of things devices. In verions prior to 4.6, an attacker can perform a denial-of-service attack by triggering an infinite loop in the processing of IPv6 neighbor solicitation (NS) messages. This type of attack can effectively shut down the operation of the system because of the cooperative scheduling used for the main parts of Contiki-NG and its communication stack. The problem has been patched in Contiki-NG 4.6. Users can apply the patch for this vulnerability out-of-band as a workaround.
AnalysisAI
Contiki-NG is an open-source, cross-platform operating system for internet of things devices. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.
Technical ContextAI
This vulnerability is classified under CWE-835. Contiki-NG is an open-source, cross-platform operating system for internet of things devices. In verions prior to 4.6, an attacker can perform a denial-of-service attack by triggering an infinite loop in the processing of IPv6 neighbor solicitation (NS) messages. This type of attack can effectively shut down the operation of the system because of the cooperative scheduling used for the main parts of Contiki-NG and its communication stack. The problem has been patched in Contiki-NG 4.6. Users can apply the patch for this vulnerability out-of-band as a workaround. Affected products include: Contiki-Ng. Version information: prior to 4.6.
RemediationAI
No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.
More in Contiki Ng
View allAn issue was discovered in the MQTT server in Contiki-NG before 4.2. Rated critical severity (CVSS 10.0), this vulnerabi
Contiki-NG is an open-source, cross-platform operating system for internet of things devices. Rated critical severity (C
Buffer overflows were discovered in Contiki-NG 4.4 through 4.5, in the SNMP bulk get request response encoding function.
Buffer overflows were discovered in Contiki-NG 4.4 through 4.5, in the SNMP agent. Rated critical severity (CVSS 9.8), t
contiki-ng version 4 contains a Buffer Overflow vulnerability in AQL (Antelope Query Language) database engine that can
Memory access out of buffer boundaries issues was discovered in Contiki-NG 4.4 through 4.5, in the SNMP BER encoder/deco
The Contiki-NG operating system versions 4.8 and prior can be triggered to dereference a NULL pointer in the message han
Contiki-NG is an open-source, cross-platform operating system for internet of things (IoT) devices. Rated critical sever
Contiki-NG is an open-source, cross-platform operating system for IoT devices. Rated critical severity (CVSS 9.8), this
Contiki-NG is an open-source, cross-platform operating system for internet of things devices. Rated critical severity (C
Contiki-NG is an open-source, cross-platform operating system for internet of things devices. Rated critical severity (C
An issue was discovered in Contiki through 3.0 and Contiki-NG through 4.5. Rated critical severity (CVSS 9.8), this vuln
Same technique Denial Of Service
View allShare
External POC / Exploit Code
Leaving vuln.today