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CVE-2021-36762

Published: Aug 19, 2021Updated: Nov 21, 2024 Sources: CVE List NVD BDU csafNVD-CWE-Other
NVD MITRE
7.5CVSSHIGH
EPSS Score
2.3%
Top 19.0%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

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).

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:HI:NA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:NIntegrity
None
A:NAvailability
None
Open in CVSS calculator →

Weaknesses

NVD-CWE-Other

Affected Products

nichestackhcc-embedded
Embedded
Operating Systems / rtos-embedded-os
n/an/a
NicheLiteHCC Embedded
Embedded
ICS / OT / IoT / medical-device
InterNicheHCC Embedded
Embedded
ICS / OT / IoT / medical-device
hcc-embeddedcommercialOperating Systemsaka nichestack, interniche, nichestack tcp/ip
hcc embeddedcommercialICS / OT / IoTaka interniche, nichelite

Exploitability

Official Patch Available
Workaround Available

References

https://www.forescout.com/blog/new-critical-operational-technology-vulnerabilities-found-on-nichestack/
forescout.com
https://www.hcc-embedded.com/about/about-interniche
hcc-embedded.com
https://www.kb.cert.org/vuls/id/608209
kb.cert.org
and 29 more references View all →

Timeline

Published
Aug 19, 2021
Last Updated
Nov 21, 2024

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