Vulnerability identifier: #VU27972

Vulnerability risk: Low

CVSSv3.1: 2.9 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-12801

CWE-ID: CWE-200

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 potentially sensitive information.

The vulnerability exists due to an error when processing encrypted files in LibreOffice. If LibreOffice has an encrypted document open and crashes, that document is auto-saved encrypted. On restart, LibreOffice offers to restore the document and prompts for the password to decrypt it. If the recovery is successful, and if the file format of the recovered document was not LibreOffice's default ODF file format, then affected versions of LibreOffice default that subsequent saves of the document are unencrypted.

This may lead to a user accidentally saving a MSOffice file format document unencrypted while believing it to be encrypted.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

LibreOffice: 6.4.2.1 - 6.4.2.2, 6.4.1.1 - 6.4.1.2, 6.4.0.1 - 6.4.0.3, 6.3.5.1 - 6.3.5.2, 6.3.4.1 - 6.3.4.2, 6.3.0.0 - 6.3.0.4, 6.3.1 - 6.3.1.2, 6.3.2.1 - 6.3.2.2, 6.3.3.1 - 6.3.3.2

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External links
http://www.libreoffice.org/about-us/security/advisories/cve-2020-12801/

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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.