Two remote code execution vulnerabilities in JustSystems Ichitaro



Published: 2010-11-04 | Updated: 2017-03-01
Severity Critical
Patch available YES
Number of vulnerabilities 2
CVE ID CVE-2010-3915
CVE-2010-3916
CWE ID CWE-120
CWE-20
Exploitation vector Network
Public exploit Vulnerability #1 is being exploited in the wild.
Vulnerability #2 is being exploited in the wild.
Vulnerable software
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Ichitaro
Client/Desktop applications / Office applications

Vendor JustSystems Corporation

Security Advisory

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-2010-3915

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 vulnerability exists due to boundary error when handling specially crafted office 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: 2004, 2005, 2006, 2007, 2008, 2009, 2010

CPE External links

http://www.justsystems.com/jp/info/js10003.html
https://www.symantec.com/connect/blogs/new-ichitaro-vulnerability-confirmed

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.

2) Improper input validation

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-2010-3916

CWE-ID: CWE-20 - Improper Input Validation

Description

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

The vulnerability exists due to unknown error when handling specially crafted office documents. A remote attacker can create a specially crafted document, trick the victim into opening it, cause unspecified error 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: 2004, 2005, 2006, 2007, 2008, 2009, 2010

CPE External links

http://www.justsystems.com/jp/info/js10003.html
https://www.symantec.com/connect/blogs/new-ichitaro-vulnerability-confirmed

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.