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TITLE:
HyperAccess Two Security Issues

SECUNIA ADVISORY ID:
SA23366

VERIFY ADVISORY:
http://secunia.com/advisories/23366/

CRITICAL:
Moderately critical

IMPACT:
System access

WHERE:
>From remote

SOFTWARE:
HyperACCESS 8.x
http://secunia.com/product/12898/

DESCRIPTION:
Brett Moore has reported two security issues in HyperAccess, which
can be exploited by malicious people to compromise a vulnerable
system.

1) The problem is caused due to HyperAccess session files with the
".haw" extension being set to open without user interaction in the
registry key "HKEY_CLASSES_ROOT\HAWin32\EditFlags". This can be
exploited to automatically load an ".haw" file and execute arbitrary
vbscript code by invoking the 'Script To Run Before Connecting'
option to run a script file from a SMB or WEBDAV web share.

2) The "telnet://" handler is set to "hawin32.exe" in the registry
key "HKEY_CLASSES_ROOT\telnet\shell\open\command" and accepts "/r" as
a parameter in a URI. This can be exploited to execute arbitrary
vbscript code by loading a script file from a SMB or WEBDAV web
share.

Successful exploitation requires that the user views a malicious web
page using Internet Explorer.

The security issues are reported in version 8.4. Other versions may
also be affected.

SOLUTION:
Modify EditFlags in the registry and remove the telnet handler from
the registry.

PROVIDED AND/OR DISCOVERED BY:
Brett Moore

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