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LeapFTP .lsq Buffer Overflow Vulnerability
Aug 24 2005 10:47AM
Sowhat . (smaillist gmail com)
Re: LeapFTP .lsq Buffer Overflow Vulnerability
Aug 24 2005 07:13PM
Kaveh Razavi (c0d3rz_team yahoo com)
it is not a high risk vulnerability .
chance of making an stable exploit in a unicode
overflow is low .
c0d3r of IHS
Network Security Reseacher
> LeapFTP .lsq Buffer Overflow Vulnerability
> by Sowhat
> Last Update:2005.08.24
> LeapWare Inc.
> Product Affected:
> LeapFTP < 22.214.171.1242
> LeapFTP is the award-winning shareware FTP client
> that combines an
> intuitive interface with one of the most powerful
> client bases around.
> .LSQ is the LeapFTP Site Queue file, And it is
> registered with Windows
> by LeapFTP. You can save a transfer Queue to .lsq
> files and transfer it
> later by opening the .lsq files.
> However, LeapFTP does not properly check the length
> of the "Host" fields,
> when a overly long string is supplied, there will be
> a buffer overflow
> and probably arbitrary code execution.
> This vulnerability can be exploited by sending the
> malformed .lsq file
> to the victim, after the victim open the .lsq file,
> arbitray code may
> HOST=AAAAA...[ long string ]...AAAAA
> All users are encouraged to upgrade to 2.7.6
> Vendor also released an advisory:
> Vendor Response:
> 2005.08.22 Vendor notified via online WebForm
> 2005.08.23 Vendor responsed and bug fixed
> 2005.08.24 Vendor released the new version 126.96.36.1992
> 2005.08.24 Advisory Released
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