Integer overflow in Contiki-Os Contiki
CVE-2021-28362
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.
EPSS: 0.013 (68.9th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Contiki-os Contiki
- N/a — versions n/a
Weakness classification (CWE)
References
- cve@mitre.org (US Government Resource, Third Party Advisory, x_refsource_MISC)
- cve@mitre.org (Third Party Advisory, x_refsource_MISC, Release Notes)
Frequently asked questions
- What is CVE-2021-28362?
- CVE-2021-28362 is a high-severity vulnerability in Contiki-Os Contiki, classified under Integer Underflow. CVSS score: 7.5/10. Published 2021-03-24.
- How severe is CVE-2021-28362?
- High severity. CVSS v3 base score is 7.5 out of 10.