CVE-2021-28362
An issue was discovered in Contiki through 3.0.
Published 5 y ago · modified 4 mo ago · JSON
Summary
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.
Exploit prediction (EPSS)
1.35% probability of exploitation in the next 30 days, higher than 72% of all scored CVEs.
CVSS scores
| Assigned by | Version | Score | Vector |
|---|---|---|---|
| NVD | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
| NVD | 2.0 | 5.0 | AV:N/AC:L/Au:N/C:N/I:N/A:P |
Classification
- Weakness
- CWE-191 Integer Underflow (Wrap or Wraparound)
References
- kb.cert.org /vuls/id/815128 · x_refsource_MISC, x_transferred
- github.com /contiki-os/contiki/releases · x_refsource_MISC, x_transferred
Sources
- CVE List: CVE-2021-28362
- NVD: CVE-2021-28362
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