plan-s has discovered two vulnerabilities in NamoInstaller ActiveX Control, which can be exploited by malicious people to compromise a user's system.
1) The NamoInstaller.NamoInstall.1 ActiveX control (NamoInstaller.dll) includes the insecure "Install()" method, which can be exploited to e.g. download and execute a malicious program when a user is tricked into visiting a malicious website.
2) A boundary error in the NamoInstaller.NamoInstall.1 ActiveX control when handling arguments passed to the "Install()" method can be exploited to cause a stack-based buffer overflow by passing an overly-long string as argument to the affected method.
Vulnerability #1 is confirmed in NamoInstaller.dll versions 188.8.131.52, 184.108.40.206, and 220.127.116.11, and vulnerability #2 is confirmed in version 18.104.22.168. Other versions may also be affected.
Solution: Set the kill-bit for the affected ActiveX control.
Provided and/or discovered by: plan-s
Original Advisory: http://www.milw0rm.com/exploits/4986
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Subject: NamoInstaller ActiveX Control NamoInstall Class "Install()" Method Vulnerabiliti
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