Arbitrary file disclosure in LibreOffice

1) Arbitrary file disclosure

EUVDB-ID: #VU5891

Risk: Low

CVSSv4.0: 0.2 [CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2017-3157

CWE-ID: CWE-200 - Exposure of sensitive information to an unauthorized actor

Exploit availability: No

Description

The vulnerability allows a remote attacker to obtain potentially sensitive information.

The vulnerability exists within calc and write functionality of LibreOffice when processing embedded objects during preview of files. A remote attacker can create a specially crafted document, linked to an existing file on victims system, trick the victim into opening the document, saving it and sending back to the attacker.

Successful exploitation of the vulnerability may allow an attacker to view contents of arbitrary files on the system.

Mitigation

The vulnerability is fixed in the following versions: 5.1.6, 5.2.2, and 5.3.0

Vulnerable software versions

LibreOffice: 5.1.0 - 5.2.1

CPE2.3

• cpe:2.3:a:libreoffice:libreoffice:5.1.0:*:*:*:*:*:*:*
• cpe:2.3:a:libreoffice:libreoffice:5.1.1:*:*:*:*:*:*:*
• cpe:2.3:a:libreoffice:libreoffice:5.1.2:*:*:*:*:*:*:*
• cpe:2.3:a:libreoffice:libreoffice:5.1.3:*:*:*:*:*:*:*
• cpe:2.3:a:libreoffice:libreoffice:5.1.4:*:*:*:*:*:*:*
• cpe:2.3:a:libreoffice:libreoffice:5.1.5:*:*:*:*:*:*:*
• cpe:2.3:a:libreoffice:libreoffice:5.2.0:*:*:*:*:*:*:*
• cpe:2.3:a:libreoffice:libreoffice:5.2.1:*:*:*:*:*:*:*

External links

https://www.libreoffice.org/about-us/security/advisories/cve-2017-3157/

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to trick the victim to visit a specially crafted website or open a file.

Is there known malware, which exploits this vulnerability?

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