Parvez Anwar has discovered a vulnerability in Vantage Linguistics AnswerWorks, which can be exploited by malicious people to compromise a user's system.
The vulnerability is caused due to a boundary error within the awApi4.AnswerWorks.1 (awApi4.dll) ActiveX control when handling arguments passed to certain methods (e.g. "GetHistory()", "GetSeedQuery()", "SetSeedQuery()"). This can be exploited to cause a stack-based buffer overflow by passing an overly long (greater than 215 bytes) argument to the affected methods.
Successful exploitation allows execution of arbitrary code when a user e.g. is tricked into visiting a malicious website.
The vulnerability is confirmed in awApi4.dll version 220.127.116.11 and affects AnswerWorks versions 18.104.22.168 to 22.214.171.124, and 126.96.36.199 to 188.8.131.52.
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Subject: Vantage Linguistics AnswerWorks 4 API ActiveX Control Buffer Overflow
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