Zero-day vulnerability in GLWorld

Stack-based buffer overflow
CVE-2008-0647

Not patched

Known malware:

Infostealer.Gampass
Trojan.Exploit.SSX (Trojan.Exploit.ANNZ )

Vulnerability details

Advisory: SB2008020501 - Remote code execution in Ourgame GLWorld

Vulnerable component: GLWorld

CVE-ID: CVE-2008-0647

CVSSv3 score: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:F/RL:U/RC:C

CWE-ID: CWE-119 - Memory corruption

Description:

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

The weakness exists due to stack-based buffer overflow in the ActiveX control (HanGamePluginCn18.dll). A remote attacker can create a specially crafted web page, trigger memory corruption and execute arbitrary code on the target 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.

Public Exploits:

- Ourgame GLWorld 2.x - 'hgs_startNotify()' ActiveX Buffer Overflow [Exploit-DB]

External links:

https://www.symantec.com/connect/blogs/zero-day-exploit-lianzong-game-platform
https://www.symantec.com/security_response//writeup.jsp?docid=2008-020607-4737-99
http://blog.threatexpert.com/2008/05/new-storm-on-horizon-now-even-microsoft.html

About zero-day vulnerabilities

Zero-day vulnerability is an undisclosed vulnerability in software that hackers can exploit to compromise computer programs, gain unauthorized access to sensitive data, penetrate networks, etc. We consider vulnerability a zero-day when there is no solution provided from software vendor and the vulnerability is being actively exploited by malicious actors.

Zero-day candidate is a potential zero-day vulnerability in software which might have been used in targeted attacks, however there is no evidence to support this suggestion.