CVEvulnerability
CVE-2021-28362
7.5 HIGH
Official page ↗
- Status
- Modified
- Published
- 2021-03-24
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- CVSS 2.0 ([email protected])
- 5.0 MEDIUM — AV:N/AC:L/Au:N/C:N/I:N/A:P
- Weaknesses
- CWE-191
Description
An issue was discovered in Contiki through 3.0. When sending an ICMPv6 error message because of invalid extension header options in an incoming IPv6 packet, there is an attempt to remove the RPL extension headers. Because the packet length and the extension header length are unchecked (with respect to the available data) at this stage, and these variables are susceptible to integer underflow, it is possible to construct an invalid extension header that will cause memory corruption issues and lead to a Denial-of-Service condition. This is related to rpl-ext-header.c.
Affected configurations
• contiki-os contiki (<= 3.0)
Related
Weakness · CWE (1)
- CWE-191 Integer Underflow (Wrap or Wraparound) weakness
References
- https://github.com/contiki-os/contiki/releases Release Notes, Third Party Advisory
- https://www.kb.cert.org/vuls/id/815128 Third Party Advisory, US Government Resource
- https://github.com/contiki-os/contiki/releases Release Notes, Third Party Advisory
- https://www.kb.cert.org/vuls/id/815128 Third Party Advisory, US Government Resource