CVE-2021-21281 HIGH

CVE-2021-21281: Buffer overflow due to unvalidated TCP data offset

Vendor Contiki-Ng
Product contiki-ng
Weakness CWE-120
Published June 18, 2021
Last update August 3, 2024
View on NVD All CVEs

CVSS base score

7.0/10
Attack vector Network
Attack complexity High
Privileges required None
User interaction None
Confidentiality Low
Integrity Low

CVSS vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:H

What the vulnerability does

01Description

Contiki-NG is an open-source, cross-platform operating system for internet of things devices. A buffer overflow vulnerability exists in Contiki-NG versions prior to 4.6. After establishing a TCP socket using the tcp-socket library, it is possible for the remote end to send a packet with a data offset that is unvalidated. The problem has been patched in Contiki-NG 4.6. Users can apply the patch for this vulnerability out-of-band as a workaround.

Key dates

02Disclosure timeline

June 18, 2021 CVE published
August 3, 2024 Record updated