#VU76612 Improper validation of array index in LibreOffice - CVE-2023-0950

Vulnerability identifier: #VU76612

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-2023-0950

CWE-ID: CWE-129

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
LibreOffice
Client/Desktop applications / Office applications

Vendor: LibreOffice

Description

The vulnerability allows a remote attacker to compromise the affected system.

The vulnerability exists due to improper validation of array index when malformed spreadsheet formulas, such as AGGREGATE. A remote attacker can trick the victim to open a specially crafted file, trigger an array index underflow and execute arbitrary code on the system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

LibreOffice: 7.4.0.1 - 7.4.0.3, 7.4.1.1, 7.4.1.2, 7.4.2.1, 7.4.2.2, 7.4.2.3, 7.4.3.1, 7.4.3.2, 7.4.4.1, 7.4.4.2, 7.4.5.1, 7.5.0.1, 7.5.0.2, 7.5.0.3

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External links
https://www.libreoffice.org/about-us/security/advisories/CVE-2023-0950

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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.