#VU8964 Out-of-bounds write in OpenOffice - CVE-2017-9806

Vulnerability identifier: #VU8964

Vulnerability risk: High

CVSSv4.0: 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:P/U:Amber]

CVE-ID: CVE-2017-9806

CWE-ID: CWE-787

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
OpenOffice
Client/Desktop applications / Office applications

Vendor: Apache Foundation

Description
The vulnerability allows a remote attacker can execute arbitrary code on the target system.

The weakness exists due to boundary error in the WW8Fonts::WW8Fonts function. A remote attacker can send a specially crafted .doc file, trick the victim into opening it, trigger out-of-bounds write and execute arbitrary code with privileges of the current user.

Successful exploitation of the vulnerability may result in system compromise.

Mitigation
Update to version 4.1.4.

Vulnerable software versions

OpenOffice: 4.0.0 - 4.1.3

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External links
https://www.openoffice.org/security/cves/CVE-2017-9806.html

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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. However, proof of concept for this vulnerability is available.