CVE-2020-25767

HIGH
7.5
CVSS Score
Published: August 18, 2021 at 06:39 PM UTC
Updated: June 17, 2026 at 03:07 AM UTC
1 product affected across 1 vendorNichestack IPV4

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Severity
HIGH7.5
Exploit prediction
EPSS 1%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (2)

Third Party Advisoryx_refsource_CERT-VNx_refsource_MISCUS Government Resource
https://www.kb.cert.org/vuls/id/608209

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-125

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