#VU77139 Access of Uninitialized Pointer in Cobalt - CVE-2023-34288

Vulnerability identifier: #VU77139

Vulnerability risk: Medium

CVSSv4.0: 4.8 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2023-34288

CWE-ID: CWE-824

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Cobalt
Client/Desktop applications / Virtualization software

Vendor: Ashlar-Vellum

Description

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to uninitialized pointer access within the parsing of XE files. A remote attacker can create a specially crafted file, trick the victim into opening it using the affected software and execute arbitrary code on the target system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Cobalt: before 12.0.1204.54

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External links
https://www.zerodayinitiative.com/advisories/ZDI-23-826/

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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.