Remote code execution in JustSystems Ichitaro



Published: 2011-06-15 | Updated: 2016-12-26
Severity Critical
Patch available YES
Number of vulnerabilities 1
CVE ID CVE-2011-1331
CWE ID CWE-122
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) Heap-based 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-2011-1331

CWE-ID: CWE-122 - Heap-based Buffer Overflow

Description

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

The weakness exists due to heap-based buffer overflow when handling malformed files. A remote attacker can create a specially crafted file, trick the victim into opening it, trigger memory corruption and execute arbitrary code on the system 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

Insatll update from vendor's website.
http://www.justsystems.com/jp/info/js11001.html

Vulnerable software versions

Ichitaro: 2005, 2006, 2007, 2008, 2009, 2010, 2011

CPE External links

http://www.justsystems.com/jp/info/js11001.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.