Remote code execution in Ourgame GLWorld ActiveX control

1) Buffer overflow

EUVDB-ID: #VU1248

Risk: Critical

CVSSv3.1: 9.4 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H/E:F/RL:U/RC:C]

CVE-ID: CVE-2007-5722

CWE-ID: CWE-119 - Memory corruption

Exploit availability: Yes

Description

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

The vulnerability exists due to boundary error when handling overly long argument passed tp ConnectAndEnterRoom() method in GlobalLink GLCHAT.GLChatCtrl.1 ActiveX control, used by Ourgame GLWorld. A remote attacker can create a specially crafted web page, trick the victim into visiting it, cause a 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.

Mitigation

Vulnerable software versions

Globallink: 2.7.0.8

External links

http://exchange.xforce.ibmcloud.com/vulnerabilities/38222
http://www.f-secure.com/weblog/archives/00001432.html
http://www.f-secure.com/weblog/archives/00001427.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 open a a specially crafted 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.