Out-of-bounds Read in Hcc-Embedded Nichestack Ipv4
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 class: Buffer Overflow
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.015 (72.4th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 72nd percentile — 72.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.015 · newest: 0.015 · change: 0.000
Affected products
- Hcc-Embedded Nichestack Ipv4 — versions 4.1
Weakness classification (CWE)
References
- www.forescout.com/blog/new-critical-operational-technology-vulnerabilities-foun… (Third Party Advisory, Mitigation)
- www.kb.cert.org/vuls/id/608209 (US Government Resource, Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2020-25767?
- CVE-2020-25767 is a high-severity vulnerability in Hcc-Embedded Nichestack Ipv4, classified under Out-of-bounds Read. CVSS score: 7.5/10. Published 2021-08-18.
- How severe is CVE-2020-25767?
- High severity. CVSS v3 base score is 7.5 out of 10.