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.
History

No history.

cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published: 2021-09-05T18:26:43

Updated: 2024-08-04T02:44:10.790Z

Reserved: 2021-09-05T00:00:00

Link: CVE-2021-40523

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Analyzed

Published: 2021-09-05T19:15:15.030

Modified: 2021-09-10T19:50:51.270

Link: CVE-2021-40523

cve-icon Redhat

No data.