Incorrect permission assignment for critical resource in Rockwell Automation RSLinx Classic



| Updated: 2020-06-12
Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2020-10642
CWE-ID CWE-732
Exploitation vector Local
Public exploit N/A
Vulnerable software
 RSLinx Classic
Server applications / SCADA systems

Vendor Rockwell Automation

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Incorrect permission assignment for critical resource

EUVDB-ID: #VU28999

Risk: Low

CVSSv4.0: 7.4 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:U/U:Clear]

CVE-ID: CVE-2020-10642

CWE-ID: CWE-732 - Incorrect Permission Assignment for Critical Resource

Exploit availability: No

Description

The vulnerability allows a local user to execute arbitrary code on the system.

The vulnerability exists due to insecure permissions. A local user can modify a registry key and execute arbitrary code using system privileges when opening RSLinx Classic. 

Mitigation

Vendor recommends to apply patch 1091155 for versions 3.60 to 4.11.

Vulnerable software versions

RSLinx Classic: - - 4.11.00

CPE2.3 External links

https://www.us-cert.gov/ics/advisories/icsa-20-100-01


Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.

The attacker would have to login to the system and perform certain actions in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

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



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