Remote code execution in JustSystems Ichitaro

1) Buffer overflow

EUVDB-ID: #VU1368

Risk: Critical

CVSSv4.0: [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-2007-1938

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

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

The vulnerability exists due to boundary error when processing malicious documents. A remote attacker can create a specially crafted document, trick the victim into opening it, cause buffer overflow and execute arbitrary code on vulnerable system.

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

Note: this vulnerability is being actively exploited.

Mitigation

Install patch from vendor's website.

Vulnerable software versions

Ichitaro: 2005 - 2007

CPE2.3

• cpe:2.3:a:justsystems_corporation:ichitaro:2005:*:*:*:*:*:*:*
• cpe:2.3:a:justsystems_corporation:ichitaro:2006:*:*:*:*:*:*:*
• cpe:2.3:a:justsystems_corporation:ichitaro:2007:*:*:*:*:*:*:*

External links

http://www.justsystems.com/jp/info/pd7002.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 a file.

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.