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CVE-2020-9307

Published: Feb 11, 2021Updated: Nov 21, 2024 Sources: CVE List NVD BDU csafCWE-835
NVD MITRE
6.5CVSSMEDIUM
EPSS Score
0.6%
Top 57.6%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

Hirschmann OS2, RSP, and RSPE devices before HiOS 08.3.00 allow a denial of service. An unauthenticated, adjacent attacker can cause an infinite loop on one of the HSR ring ports of the device. This effectively breaks the redundancy of the HSR ring. If the attacker can perform the same attack on a second device, the ring is broken into two parts (thus disrupting communication between devices in the different parts).

CVSS Vector Breakdown

AV:AAC:LPR:NUI:NS:UC:NI:NA:H
Exploitability
AV:AAttack Vector
Adjacent
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
Open in CVSS calculator →

Weaknesses

CWE-835

Affected Products

n/an/a
hirschmann hiosbeldenNetworking Infrastructure
Hirschmann HiOSBelden Inc.
Embedded
Networking Infrastructure / network-management
beldencommercialUSNetworking Infrastructureaka belden hirschmann, tofino security appliance
belden inc.commercialUSNetworking Infrastructureaka belden

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

Official Patch Available

MITRE ATT&CK

1 technique
Impact
View detailed technique mapping

References

https://www.belden.com/dfsmedia/f1e38517e0cd4caa8b1acb6619890f5e/12276-source/options/view
belden.com
https://www.belden.com/security
belden.com
https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/OT/white/2021/icsa-21-075-03.json
raw.githubusercontent.com
and 6 more references View all →

Timeline

Published
Feb 11, 2021
Last Updated
Nov 21, 2024

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