#VU4798 Buffer overflow in Ichitaro - CVE-2013-3644

Vulnerability identifier: #VU4798

Vulnerability risk: Critical

CVSSv4.0: 8.4 [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:A/U:Red]

CVE-ID: CVE-2013-3644

CWE-ID: CWE-120

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Ichitaro
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 buffer overflow when processing office documents. A remote attacker can create a specially crafted document, trick the victim into opening it, trigger memory corruption and execute arbitrary code with privileges of the current user.

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

Note: the vulnerability was being actively exploited.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Ichitaro: 2006 - 2013

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External links
https://www.justsystems.com/jp/info/js13002.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.