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TITLE:
SignKorea SKCrypAX ActiveX Control Multiple Buffer Overflows

SECUNIA ADVISORY ID:
SA24820

VERIFY ADVISORY:
http://secunia.com/advisories/24820/

CRITICAL:
Highly critical

IMPACT:
System access

WHERE:
>From remote

SOFTWARE:
SignKorea SKCrypAX ActiveX Control 5.x
http://secunia.com/product/13872/

DESCRIPTION:
Sukhee Jung has reported some vulnerabilities in SignKorea's SKCrypAX
ActiveX control, which can be exploited by malicious people to
compromise a user's system.

The vulnerabilities are caused due to boundary errors within the
"DownloadCert()", "DecryptFileByKey()", and "EncryptFileByKey()"
methods. These can be exploited to cause stack-based buffer overflows
via overly long strings passed as certain arguments to the said
methods.

The vulnerabilities are reported in version 5.4.1.2. Other versions
may also be affected.

SOLUTION:
Update to the latest version.

PROVIDED AND/OR DISCOVERED BY:
Sukhee Jung

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