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CVE-2020-35684

Published: Aug 19, 2021Updated: Nov 21, 2024 Sources: CVE List NVD BDU csafCWE-20
7.5HIGH
NVD MITRE
EPSS Score
2.3%
Top 17.9%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
Not available

Description

An issue was discovered in HCC Nichestack 3.0. The code that parses TCP packets relies on an unchecked value of the IP payload size (extracted from the IP header) to compute the length of the TCP payload within the TCP checksum computation function. When the IP payload size is set to be smaller than the size of the IP header, the TCP checksum computation function may read out of bounds (a low-impact write-out-of-bounds is also possible).

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:NI:NA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:HAvailability
High
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Weaknesses

CWE-20

Affected Products

siemens
commercial·DEaka siemens ag
sentron 3wl com35 firmware
ICS / OT / IoT
sentron 3wa com190 firmware
ICS / OT / IoT
HCC Embedded
commercialaka interniche, nichelite
NicheLiteEmbedded
ICS / OT / IoT / medical-device
InterNicheEmbedded
ICS / OT / IoT / medical-device
hcc-embedded
commercialaka interniche, nichestack tcp/ip, nichestack
nichestackEmbedded
Operating Systems / rtos-embedded-os
and 1 more affected products View all →

Exploitability

Official Patch Available
Workaround Available
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Attack Graph

Products CVE Techniques Tactics

Click technique nodes for MITRE ATT&CK details · drag to pan · Ctrl/⌘ + scroll to zoom, or go fullscreen.

MITRE ATT&CK

1 technique
Initial Access
View detailed technique mapping

References

https://www.hcc-embedded.com
hcc-embedded.com
https://cert-portal.siemens.com/productcert/pdf/ssa-789208.pdf
cert-portal.siemens.com
https://www.forescout.com/blog/new-critical-operational-technology-vulnerabilities-found-on-nichestack/
forescout.com
and 30 more references View all →

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