Zero-day vulnerability in Igame

Stack-based buffer overflow

Exploited in the wild in April and May 2009.

Known malware:

Mdropper.H Trojan

Vulnerability details

Advisory: SB2009051001 - Remote code execution in Chinagames IGame ActiveX control

Vulnerable component: Igame

CVE-ID: CVE-2009-1800

CVSSv3 score: 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

CWE-ID: CWE-121 - Stack-based Buffer Overflow


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

The weakness exists due to stack-based buffer overflow in CGAgent ActiveX control (CGAgent.dll). A remote attacker can create a specially crafted Web page that passes an overly long string to the CreateChinagames() method, trick the victim into visiting it, trigger memory corruption and execute arbitrary code on the 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: