Ubuntu update for libreoffice

Published: 2023-06-07

Risk	High
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2023-0950 CVE-2023-2255
CWE-ID	CWE-129 CWE-357
Exploitation vector	Network
Public exploit	N/A
Vulnerable software	Ubuntu Operating systems & Components / Operating system libreoffice (Ubuntu package) Operating systems & Components / Operating system package or component
Vendor	Canonical Ltd.

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Improper validation of array index

EUVDB-ID: #VU76612

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 - Improper Validation of Array Index

Exploit availability: No

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

Update the affected package libreoffice to the latest version.

Vulnerable software versions

Ubuntu: 20.04 - 22.04

libreoffice (Ubuntu package): before 1:6.4.7-0ubuntu0.20.04.8

CPE2.3

External links

https://ubuntu.com/security/notices/USN-6144-1

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.

2) Insufficient UI Warning of Dangerous Operations

EUVDB-ID: #VU76613

Risk: Medium

CVSSv4.0: 1 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2023-2255

CWE-ID: CWE-357 - Insufficient UI Warning of Dangerous Operations