SB2007121401 - Buffer overflow in JustSystems Ichitaro

Description

This security bulletin contains information about 1 security vulnerability.

1) Stack-based buffer overflow (CVE-ID: CVE-2007-6436)

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

The vulnerability exists due to boundary error in JSGCI.DLL library when processing malicious documents. A remote attacker can create a specially crafted document file, trick the victim into opening it, cause stack-based buffer overflow and execute arbitrary code with privileges of the current user.

Successful exploitation of the vulnerability results in compromise of vulnerable system.

Note: this vulnerability is being actively exploited.

Remediation

Install update from vendor's website.

References

• http://www.justsystems.com/jp/info/pd7005.html
• http://www.symantec.com/security_response/writeup.jsp?docid=2007-121308-3953-99