Remote Code Execution Vulnerability in Contiki-NG tinyDTLS
CVE-2021-42146

7.5HIGH

Key Information:

Vendor

Contiki-ng

Status
Tinydtls
Vendor
CVE Published:
24 January 2024

What is CVE-2021-42146?

A vulnerability in Contiki-NG's tinyDTLS exposes DTLS servers to potential attacks by allowing the reuse of the same epoch number within a timeframe that exceeds the permissible limits defined in RFC6347. This enables remote attackers to access sensitive data of connected clients, posing a significant risk to the integrity and confidentiality of application-level data. The breach is particularly concerning as it circumvents established protocols meant to safeguard against such actions, highlighting the need for immediate attention and remediation by users of the affected software.

References

https://seclists.org/fulldisclosure/2024/Jan/19

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
High
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.