#VU65768 Inadequate Encryption Strength in LibreOffice - CVE-2022-26307

Vulnerability identifier: #VU65768

Vulnerability risk: Low

CVSSv4.0: 1.1 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2022-26307

CWE-ID: CWE-326

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
LibreOffice
Client/Desktop applications / Office applications

Vendor: LibreOffice

Description

The vulnerability allows a local user to gain access to sensitive information.

The vulnerability exists due to LibreOffice uses a poor encoding of the master key for web connections in the user’s configuration database, resulting in weakening its entropy from 128 to 43 bits. A local user can decrypt victim's password.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

LibreOffice: before 7.2.7.1, 7.3.3.1, 7.2.7.1, 7.2.7.1

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External links
https://www.libreoffice.org/about-us/security/advisories/cve-2022-26307

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Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.