Vulnerability identifier: #VU26603

Vulnerability risk: High

CVSSv3.1: 8.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-6994

CWE-ID: CWE-119

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
HiOS
Operating systems & Components / Operating system
HiSecOS
Operating systems & Components / Operating system

Vendor: Belden Inc.

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error when parsing URL arguments. A remote attacker can send a pecially crafted HTTP request, trigger memory corruption and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

This vulnerability affects the following devices using HiOS:

RSP, RSPE, RSPS, RSPL, MSP, EES, EES, EESX, GRS, OS, RED    

And devices using HiSecOS:

EAGLE20/30

Mitigation
Install updates from vendor's website.

Vulnerable software versions

HiOS: 07.0.02

HiSecOS: 03.2.00

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External links
http://www.us-cert.gov/ics/advisories/icsa-20-091-01
http://www.belden.com/hubfs/support/security/bulletins/Belden_Security_Bulletin_BSECV-2020-01_1v2_FINAL.pdficsa-22-270-01

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.