#VU76573 Out-of-bounds write in Cscape and Cscape EnvisionRV - CVE-2023-32203

Vulnerability identifier: #VU76573

Vulnerability risk: High

CVSSv4.0: 6.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2023-32203

CWE-ID: CWE-787

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Cscape
Universal components / Libraries / Software for developers
Cscape EnvisionRV
Server applications / Remote access servers, VPN

Vendor: Horner Automation

Description

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a boundary error in CScape_EnvisionRV+0x2e374b when parsing project files. A remote attacker can create a specially crafted file, trick the victim into opening it using the affected software, trigger an out-of-bounds write and execute arbitrary code on the target system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Cscape: 9.90 SP8

Cscape EnvisionRV: 4.70

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External links
https://www.cisa.gov/news-events/ics-advisories/icsa-23-143-04

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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.