CVE-2020-25767
HCC Embedded NicheStack DNS Out-of-bounds Read and Denial-of-Service Vulnerability
Description
An issue was discovered in HCC Embedded NicheStack IPv4 4.1. The dnc_copy_in routine for parsing DNS domain names does not check whether a domain name compression pointer is pointing within the bounds of the packet (e.g., forward compression pointer jumps are allowed), which leads to an Out-of-bounds Read, and a Denial-of-Service as a consequence.
INFO
Published Date :
Aug. 18, 2021, 7:15 p.m.
Last Modified :
Aug. 26, 2021, 7:32 p.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
3.6
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-2020-25767.
| URL | Resource |
|---|---|
| https://www.forescout.com/blog/new-critical-operational-technology-vulnerabilities-found-on-nichestack/ | Mitigation Third Party Advisory |
| https://www.kb.cert.org/vuls/id/608209 | Third Party Advisory US Government Resource |
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-2020-25767 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2020-25767 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]
Aug. 26, 2021
Action Type Old Value New Value Added CVSS V2 NIST (AV:N/AC:L/Au:N/C:N/I:N/A:P) Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Changed Reference Type https://www.forescout.com/blog/new-critical-operational-technology-vulnerabilities-found-on-nichestack/ No Types Assigned https://www.forescout.com/blog/new-critical-operational-technology-vulnerabilities-found-on-nichestack/ Mitigation, Third Party Advisory Changed Reference Type https://www.kb.cert.org/vuls/id/608209 No Types Assigned https://www.kb.cert.org/vuls/id/608209 Third Party Advisory, US Government Resource Added CWE NIST CWE-125 Added CPE Configuration OR *cpe:2.3:a:hcc-embedded:nichestack_ipv4:4.1:*:*:*:*:*:*:*
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2020-25767 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-2020-25767
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.13 }} 0.05%
score
0.47688
percentile