shinnai has discovered a vulnerability in ebCrypt, which can be exploited by malicious people to overwrite arbitrary files.
The vulnerability is caused due to the EbCrypt.eb_c_PRNGenerator.1 ActiveX control (ebCrypt.dll) including the insecure "SaveToFile()" method, which saves a file specified as an argument. This can be exploited to overwrite and corrupt arbitrary files on the system.
The vulnerability is confirmed in version 220.127.116.117. Other versions may also be affected.
Solution: Set the kill-bit for the affected ActiveX control.
Provided and/or discovered by: shinnai
Original Advisory: http://shinnai.altervista.org/exploits/txt/TXT_ZzLXiITIfSuVuh1kPHDP.html
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Subject: ebCrypt eb_c_PRNGenerator Class ActiveX Control Insecure Method
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