Multiple vulnerabilities in Rockwell Automation EDS Subsystem

Published: 2020-05-20

Risk	Medium
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2020-12038 CVE-2020-12034
CWE-ID	CWE-119 CWE-89
Exploitation vector	Network
Public exploit	N/A
Vulnerable software	EDS Subsystem Other software / Other software solutions RSLinx Classic Server applications / SCADA systems FactoryTalk Linx Server applications / SCADA systems RSNetWorx software Server applications / SCADA systems Studio 5000 Logix Designer Client/Desktop applications / Other client software
Vendor	Rockwell Automation

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Buffer overflow

EUVDB-ID: #VU28130

Risk: Medium

CVSSv4.0: 1.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2020-12038

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary error in the algorithm that matches square brackets in the EDS subsystem. A remote authenticated attacker can create a specially crafted EDS file, trick the victim into opening it, trigger memory corruption and cause a denial of service condition on the target system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

EDS Subsystem: - - 28.0.1

RSLinx Classic: - - 4.11.00

FactoryTalk Linx: 6.00 - 6.11

RSNetWorx software: - - 28.00.00

Studio 5000 Logix Designer: - - 32

CPE2.3

External links

https://www.us-cert.gov/ics/advisories/icsa-20-140-01

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

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

2) SQL injection

EUVDB-ID: #VU28131

Risk: Low

CVSSv4.0: 5 [CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2020-12034

CWE-ID: CWE-89 - Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')