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Sina UC BROWSER2UC.dll ActiveX Control Buffer Overflows
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Secunia Advisory:
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SA23638
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Release Date:
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2007-01-09
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Last Update:
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2007-01-17
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Popularity:
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4,741 views
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Critical:
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Highly critical
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Impact:
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System access
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Where:
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From remote
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Solution Status:
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Unpatched
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| Software: | Sina UC UC2006
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| CVE reference: | CVE-2007-0174
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Description:
Sowhat has reported two vulnerabilities in Sina UC, which can be exploited by malicious people to compromise a user's system.
1) A boundary error in the BRWOSSRE2UC.dll ActiveX Control when handling the "SendChatRoomOpt()" method can be exploited to cause a stack-based buffer overflow by passing an overly long string (greater than 5000 bytes) as the first argument.
2) A boundary error in the BRWOSSRE2UC.dll ActiveX Control when handling the "SendDownLoadFile()" method can be exploited to cause a stack-based buffer overflow by passing an overly long string as the astrDownDir argument.
Successful exploitation allows execution of arbitrary code when a user e.g. visits a malicious website.
The vulnerability is reported in UC2006. Other versions may also be affected.
Solution:
Set the killbit for the affected ActiveX control.
Provided and/or discovered by:
Sowhat, Nevis Labs
Changelog:
2007-01-17: Added CVE reference.
Original Advisory:
http://secway.org/advisory/ad20070109EN.txt
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Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise.
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