CVE Vulnerability

CVE-2021-38311

In Contiki 3.0, potential nonterminating acknowledgment loops exist in the Telnet service. When the negotiated options are already disabled, servers still respond to DONT and WONT requests with WONT or DONT commands, which may lead to infinite acknowledgment loops, denial of service, and excessive CPU consumption.

4.3 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 8.6 / Impact : 2.9

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact PARTIAL

Scope

7.5 /10

CVSS v3.0 : HIGH

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://github.com/contiki-os/contiki/issues/2685 Exploit Issue Tracking
Configurations

Configuration 1

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

Published : 2021-08-09 10:15

Updated : 2021-08-17 06:36

NVD link : CVE-2021-38311

Mitre link : CVE-2021-38311

Products Affected
No products.
CWE
CWE-835