CVE-2021-36762

Description

An issue was discovered in HCC Embedded InterNiche NicheStack through 4.3. The tfshnd():tftpsrv.c TFTP packet processing function doesn't ensure that a filename is adequately '\0' terminated; therefore, a subsequent call to strlen for the filename might read out of bounds of the protocol packet buffer (if no '\0' byte exists within a reasonable range).

7.5

CVSS

Severity: High

CVSS 3.1 •

CVSS 2.0 •

EPSS 0.38%

Third-Party Advisory cert.org Third-Party Advisory forescout.com

Affected: n/a n/a

References

Link	Tags
https://www.hcc-embedded.com/about/about-interniche	product
https://www.forescout.com/blog/new-critical-operational-technology-vulnerabilities-found-on-nichestack/	third party advisory mitigation
https://www.kb.cert.org/vuls/id/608209	third party advisory us government resource

Frequently Asked Questions

What is the severity of CVE-2021-36762?: CVE-2021-36762 has been scored as a high severity vulnerability.
How to fix CVE-2021-36762?: To fix CVE-2021-36762, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-36762 being actively exploited in the wild?: As for now, there are no information to confirm that CVE-2021-36762 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.

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