#VU82542 Out-of-bounds write in Ashlar-Vellum products - CVE-2023-39427

Vulnerability identifier: #VU82542

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-2023-39427

CWE-ID: CWE-787

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 compromise vulnerable system.

The vulnerability exists due to a boundary error when parsing XE 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

Cobalt: 12 SP0 1204.77

Graphite: 13.0.48

Xenon: 12 SP0 1204.77

Argon: 12 SP0 1204.77

Lithium: 12 SP0 1204.77

---

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

---

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.