CVE-2021-21280
Contiki-NG IPv6 6LoWPAN Extension Header Out-of-Bounds Write Vulnerability
Description
Contiki-NG is an open-source, cross-platform operating system for internet of things devices. It is possible to cause an out-of-bounds write in versions of Contiki-NG prior to 4.6 when transmitting a 6LoWPAN packet with a chain of extension headers. Unfortunately, the written header is not checked to be within the available space, thereby making it possible to write outside the buffer. The problem has been patched in Contiki-NG 4.6. Users can apply the patch for this vulnerability out-of-band as a workaround.
INFO
Published Date :
June 18, 2021, 9:15 p.m.
Last Modified :
June 22, 2021, 7:25 p.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
5.9
Exploitability Score :
3.9
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2021-21280.
| URL | Resource |
|---|---|
| https://github.com/contiki-ng/contiki-ng/pull/1409 | Patch Third Party Advisory |
| https://github.com/contiki-ng/contiki-ng/security/advisories/GHSA-r768-hrhf-v592 | Exploit Patch Third Party Advisory |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2021-21280 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-21280 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
Initial Analysis by [email protected]
Jun. 22, 2021
Action Type Old Value New Value Added CVSS V2 NIST (AV:N/AC:L/Au:N/C:P/I:P/A:P) Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Changed Reference Type https://github.com/contiki-ng/contiki-ng/pull/1409 No Types Assigned https://github.com/contiki-ng/contiki-ng/pull/1409 Patch, Third Party Advisory Changed Reference Type https://github.com/contiki-ng/contiki-ng/security/advisories/GHSA-r768-hrhf-v592 No Types Assigned https://github.com/contiki-ng/contiki-ng/security/advisories/GHSA-r768-hrhf-v592 Exploit, Patch, Third Party Advisory Added CPE Configuration OR *cpe:2.3:o:contiki-ng:contiki-ng:*:*:*:*:*:*:*:* versions up to (excluding) 4.6
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-21280 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2021-21280
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.42 }} 0.07%
score
0.74688
percentile