#VU82543 Out-of-bounds read in Ashlar-Vellum products - CVE-2023-39936

Vulnerability identifier: #VU82543

Vulnerability risk: High

CVSSv4.0: 5.7 [CVSS:4.0/AV:L/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-2023-39936

CWE-ID: CWE-125

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Cobalt
Client/Desktop applications / Virtualization software
Graphite
Client/Desktop applications / Virtualization software
Xenon
Client/Desktop applications / Virtualization software
Argon
Client/Desktop applications / Virtualization software
Lithium
Client/Desktop applications / Virtualization software

Vendor: Ashlar-Vellum

Description

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to a boundary condition when parsing VC6 files. A remote attacker can create a specially crafted file, trick the victim into opening it, trigger an out-of-bounds read error and read contents of memory on the system, leading to arbitrary code execution.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Cobalt: 12 SP0 1204.77

Graphite: 13.0.48

Xenon: 12 SP0 1204.77

Argon: 12 SP0 1204.77

Lithium: 12 SP0 1204.77

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External links
https://www.cisa.gov/news-events/ics-advisories/icsa-23-299-03

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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.