CVE-2021-40523

In Contiki 3.0, Telnet option negotiation is mishandled. During negotiation between a server and a client, the server may fail to give the WILL/WONT or DO/DONT response for DO and WILL commands because of improper handling of exception condition, which leads to property violations and denial of service. Specifically, a server sometimes sends no response, because a fixed buffer space is available for all responses and that space may have been exhausted.
References
Link Resource
https://github.com/contiki-os/contiki/issues/2686 Patch Third Party Advisory
https://github.com/contiki-os/contiki/issues/2686 Patch Third Party Advisory
Configurations

Configuration 1 (hide)

cpe:2.3:o:contiki-os:contiki:3.0:*:*:*:*:*:*:*

History

21 Nov 2024, 06:24

Type Values Removed Values Added
References () https://github.com/contiki-os/contiki/issues/2686 - Patch, Third Party Advisory () https://github.com/contiki-os/contiki/issues/2686 - Patch, Third Party Advisory

Information

Published : 2021-09-05 19:15

Updated : 2024-11-21 06:24


NVD link : CVE-2021-40523

Mitre link : CVE-2021-40523

CVE.ORG link : CVE-2021-40523


JSON object : View

Products Affected

contiki-os

  • contiki
CWE
CWE-754

Improper Check for Unusual or Exceptional Conditions