CVEvulnerability
CVE-2021-36762
7.5 HIGH
Official page ↗
- Status
- Modified
- Published
- 2021-08-19
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- CVSS 2.0 ([email protected])
- 7.8 HIGH — AV:N/AC:L/Au:N/C:C/I:N/A:N
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).
Affected configurations
• hcc-embedded nichestack (< 4.3)
References
- https://www.forescout.com/blog/new-critical-operational-technology-vulnerabilities-found-on-nichestack/ Mitigation, Third Party Advisory
- https://www.hcc-embedded.com/about/about-interniche Product
- https://www.kb.cert.org/vuls/id/608209 Third Party Advisory, US Government Resource
- https://www.forescout.com/blog/new-critical-operational-technology-vulnerabilities-found-on-nichestack/ Mitigation, Third Party Advisory
- https://www.hcc-embedded.com/about/about-interniche Product
- https://www.kb.cert.org/vuls/id/608209 Third Party Advisory, US Government Resource