JFrog Security Research
< Back

XRAY-194048 - NicheStack DNS client OOB-R

CVE-2020-25927 | CVSS 7.5

JFrog Severity:high

Discovered ByDenys Vozniukof the JFrog Security Research Team

Published 4 Aug, 2021 | Last updated 4 Aug, 2021

NicheStack routine for parsing DNS responses does not check whether the number of queries/responses specified in the packet header corresponds to the query/response data available in the DNS packet, leading to OOB-R

InterNiche TCP/IP stack

InterNiche (, 4.3), fixed in 4.3

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.

No PoC is supplied for this issue

If not needed, disable the NicheStack DNS client through the NicheStack CLI

(JFrog) INFRA:HALT New Vulnerabilities Impacting OT and Critical Infrastructure

NVD

< Back