Remote code execution in JustSystems Ichitaro



Published: 2013-06-18 | Updated: 2017-01-17
Severity Critical
Patch available YES
Number of vulnerabilities 1
CVE ID CVE-2013-3644
CWE ID CWE-120
Exploitation vector Network
Public exploit This vulnerability is being exploited in the wild.
Vulnerable software
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Ichitaro
Client/Desktop applications / Office applications

Vendor JustSystems Corporation

Security Advisory

This security advisory describes one critical risk vulnerability.

1) Buffer overflow

Severity: Critical

CVSSv3: 8.9 [CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H/E:F/RL:O/RC:C] [PCI]

CVE-ID: CVE-2013-3644

CWE-ID: CWE-120 - Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

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, 2007, 2008, 2009, 2010, 2011, 2012, 2013

CPE External links

http://www.justsystems.com/jp/info/js13002.html

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 an attachment in an e-mail message.

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.