Vulnerability identifier: #VU5235

Vulnerability risk: Critical

CVSSv3.1: 8.9 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H/E:F/RL:O/RC:C]

CVE-ID: CVE-2014-0810

CWE-ID: CWE-119

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Sanshiro
Client/Desktop applications / Office applications

Vendor: JustSystems Corporation

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

The weakness exists due to a boundary error when processing office documents. A remote attacker can create a specially crafted document, trick the victim into opening it, trigger buffer overflow and execute arbitrary code with privileges of the current user.

Successful exploitation of the vulnerability results in arbitrary code execution on the vulnerable system.

Note: the vulnerability was being actively exploited.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Sanshiro: 2007 - 2010

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External links
http://jvndb.jvn.jp/en/contents/2014/JVNDB-2014-000011.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, a fully functional exploit for this vulnerability is available.