Vulnerability Details : CVE-2020-25767
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.
Vulnerability category: Denial of service
Products affected by CVE-2020-25767
- cpe:2.3:a:hcc-embedded:nichestack_ipv4:4.1:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2020-25767
0.13%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 48 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2020-25767
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
5.0
|
MEDIUM | AV:N/AC:L/Au:N/C:N/I:N/A:P |
10.0
|
2.9
|
NIST | |
|
7.5
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
3.9
|
3.6
|
NIST |
CWE ids for CVE-2020-25767
-
The product reads data past the end, or before the beginning, of the intended buffer.Assigned by: nvd@nist.gov (Primary)
References for CVE-2020-25767
-
https://www.forescout.com/blog/new-critical-operational-technology-vulnerabilities-found-on-nichestack/
New Critical Operational Technology Vulnerabilities Found on NicheStack – Mitigation Advised - ForescoutMitigation;Third Party Advisory
-
https://www.kb.cert.org/vuls/id/608209
VU#608209 - NicheStack embedded TCP/IP has vulnerabilitiesThird Party Advisory;US Government Resource
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