High severity · published Aug 18, 2021
CVE-2020-25927
The DNS feature in InterNiche NicheStack TCP/IP 4.0.1 is affected by: Out-of-bounds Read
7.5
CVSS
2.3%
EPSS
No
On KEV
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 vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)2.3% · higher than 83% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
NT
Nichestack Tcp/ip · Hcc-embedded
4.0.1 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-25927
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-25927
Broken Link
http://www.iniche.com/source-code/networking-stack/nichestack.php
Mitigation
https://www.forescout.com/blog/new-critical-operational-technology-vulnerabilities-found-on-nichestack/
Third Party Advisory
https://www.kb.cert.org/vuls/id/608209
More from Nichestack Tcp/ip
9.8
CVE-2020-25928
The DNS feature in InterNiche NicheStack TCP/IP 4.0.1 is affected by: Buffer Overflow
7.5
CVE-2020-25926
The DNS client in InterNiche NicheStack TCP/IP 4.0.1 is affected by: Insufficient entropy in the DNS transaction id