CVE-2020-25927 — HIGH (7.5)

Vulnerability Description

The DNS feature in InterNiche NicheStack TCP/IP 4.0.1 is affected by: Out-of-bounds Read. The impact is: a denial of service (remote). The component is: DNS response processing in function: dns_upcall(). The attack vector is: a specific DNS response packet. The code does not check whether the number of queries/responses specified in the DNS packet header corresponds to the query/response data available in the DNS packet.

CVSS Score

7.5

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

NONE

Integrity

NONE

Availability

HIGH

Affected Products

Vendor	Product	Versions
Hcc-Embedded	Nichestack Tcp\/Ip	4.0.1

Related Weaknesses (CWE)

CWE-125

References

http://www.iniche.com/source-code/networking-stack/nichestack.phpBroken Link
https://www.forescout.com/blog/new-critical-operational-technology-vulnerabilitiMitigationThird Party Advisory
https://www.kb.cert.org/vuls/id/608209Third Party AdvisoryUS Government Resource
http://www.iniche.com/source-code/networking-stack/nichestack.phpBroken Link
https://www.forescout.com/blog/new-critical-operational-technology-vulnerabilitiMitigationThird Party Advisory
https://www.kb.cert.org/vuls/id/608209Third Party AdvisoryUS Government Resource

FAQ

What is CVE-2020-25927?

CVE-2020-25927 is a vulnerability with a CVSS score of 7.5 (HIGH). The DNS feature in InterNiche NicheStack TCP/IP 4.0.1 is affected by: Out-of-bounds Read. The impact is: a denial of service (remote). The component is: DNS response processing in function: dns_upcall...

How severe is CVE-2020-25927?

CVE-2020-25927 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2020-25927?

Check the references section above for vendor advisories and patch information. Affected products include: Hcc-Embedded Nichestack Tcp\/Ip.