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CVE-2020-6994 Detail

Description

A buffer overflow vulnerability was found in some devices of Hirschmann Automation and Control HiOS and HiSecOS. The vulnerability is due to improper parsing of URL arguments. An attacker could exploit this vulnerability by specially crafting HTTP requests to overflow an internal buffer. The following devices using HiOS Version 07.0.02 and lower are affected: RSP, RSPE, RSPS, RSPL, MSP, EES, EES, EESX, GRS, OS, RED. The following devices using HiSecOS Version 03.2.00 and lower are affected: EAGLE20/30.

Severity

CVSS 3.x Severity and Metrics:

NIST: NVD

Base Score: 9.8 CRITICAL

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

NVD Analysts use publicly available information to associate vector strings and CVSS scores. We also display any CVSS information provided within the CVE List from the CNA.

Note: NVD Analysts have published a CVSS score for this CVE based on publicly available information at the time of analysis. The CNA has not provided a score within the CVE List.

References to Advisories, Solutions, and Tools

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Hyperlink	Resource
https://www.us-cert.gov/ics/advisories/icsa-20-091-01	Mitigation Third Party Advisory US Government Resource

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-120	Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')	NIST
CWE-12	ASP.NET Misconfiguration: Missing Custom Error Page	ICS-CERT

Known Affected Software Configurations Switch to CPE 2.2

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Change History

2 change records found show changes

Reanalysis by NIST 6/17/2021 1:22:56 PM

Action

Type

Old Value

New Value

Changed

CPE Configuration

Record truncated, showing 500 of 782 characters.
View Entire Change Record

AND
     OR
          *cpe:2.3:o:hirschmann:hios:*:*:*:*:*:*:*:* versions up to (including) 07.0.02
     OR
          cpe:2.3:h:hirschmann:embedded_ethernet_switch:-:*:*:*:*:*:*:*
          cpe:2.3:h:hirschmann:embedded_ethernet_switch_extended:-:*:*:*:*:*:*:*
          cpe:2.3:h:hirschmann:greyhound_swtich:-:*:*:*:*:*:*:*
          cpe:2.3:h:hirschmann:mice_switch_power:-:*:*:*:*:*:*:*
          cpe:2.3:h:hirschmann:octopus:-:*:*:*:*:*:*:*
          cpe:2.3:h:hirschmann:prp_redbox:-:*:*:*:*:*:*

Record truncated, showing 500 of 859 characters.
View Entire Change Record

AND
     OR
          *cpe:2.3:o:belden:hirschmann_hios:*:*:*:*:*:*:*:* versions up to (including) 07.0.02
     OR
          cpe:2.3:h:belden:hirschmann_embedded_ethernet_switch:-:*:*:*:*:*:*:*
          cpe:2.3:h:belden:hirschmann_embedded_ethernet_switch_extended:-:*:*:*:*:*:*:*
          cpe:2.3:h:belden:hirschmann_greyhound_swtich:-:*:*:*:*:*:*:*
          cpe:2.3:h:belden:hirschmann_mice_switch_power:-:*:*:*:*:*:*:*
          cpe:2.3:h:belden:hirschmann_octopus:-:*:*:*:*:*:*:*
          cpe

Changed

CPE Configuration

AND
     OR
          *cpe:2.3:o:hirschmann:hisecos:*:*:*:*:*:*:*:* versions up to (including) 03.2.00
     OR
          cpe:2.3:h:hirschmann:eagle20:-:*:*:*:*:*:*:*
          cpe:2.3:h:hirschmann:eagle30:-:*:*:*:*:*:*:*

AND
     OR
          *cpe:2.3:o:belden:hirschmann_hisecos:*:*:*:*:*:*:*:* versions up to (including) 03.2.00
     OR
          cpe:2.3:h:belden:hirschmann_eagle20:-:*:*:*:*:*:*:*
          cpe:2.3:h:belden:hirschmann_eagle30:-:*:*:*:*:*:*:*

Initial Analysis by NIST 4/06/2020 10:12:47 AM

Action	Type	Old Value	New Value
Added	CPE Configuration		Record truncated, showing 500 of 782 characters. View Entire Change Record AND OR cpe:2.3:o:hirschmann:hios::::::::* versions up to (including) 07.0.02 OR cpe:2.3:h:hirschmann:embedded_ethernet_switch:-:::::::* cpe:2.3:h:hirschmann:embedded_ethernet_switch_extended:-:::::::* cpe:2.3:h:hirschmann:greyhound_swtich:-:::::::* cpe:2.3:h:hirschmann:mice_switch_power:-:::::::* cpe:2.3:h:hirschmann:octopus:-:::::::* cpe:2.3:h:hirschmann:prp_redbox:-::::::
Added	CPE Configuration		AND OR cpe:2.3:o:hirschmann:hisecos::::::::* versions up to (including) 03.2.00 OR cpe:2.3:h:hirschmann:eagle20:-:::::::* cpe:2.3:h:hirschmann:eagle30:-:::::::*
Added	CVSS V2		NIST (AV:N/AC:L/Au:N/C:P/I:P/A:P)
Added	CVSS V3.1		NIST AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Added	CWE		NIST CWE-120
Changed	Reference Type	https://www.us-cert.gov/ics/advisories/icsa-20-091-01 No Types Assigned	https://www.us-cert.gov/ics/advisories/icsa-20-091-01 Mitigation, Third Party Advisory, US Government Resource

Quick Info

CVE Dictionary Entry:
CVE-2020-6994
NVD Published Date:
04/03/2020
NVD Last Modified:
06/17/2021
Source:
ICS-CERT

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