Date: Wed, 24 Aug 2005 18:47:24 +0800
From: "Sowhat ." <smaillist@gmail.com.>
To: [email protected], [email protected]Subject: LeapFTP .lsq Buffer Overflow Vulnerability
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LeapFTP .lsq Buffer Overflow Vulnerability
by Sowhat
Last Update:2005.08.24
http://secway.org/advisory/AD20050824.txt
Vendor:
LeapWare Inc.
Product Affected:
LeapFTP < 2.7.6.612
Overview:
LeapFTP is the award-winning shareware FTP client that combines an=20
intuitive interface with one of the most powerful client bases around.=20
Details:
.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.=20
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
executed.
//bof.lsq
[HOSTINFO]
HOST=3DAAAAA...[ long string ]...AAAAA
USER=3Dusername
PASS=3Dpassword
[FILES]
"1","/winis/ApiList.zip","477,839","E:\ApiList.zip"
SOLUTION:
All users are encouraged to upgrade to 2.7.6 immediately
Vendor also released an advisory:
http://www.leapware.com/security/2005082301.txt
Vendor Response:
2005.08.22 Vendor notified via online WebForm=20
2005.08.23 Vendor responsed and bug fixed
2005.08.24 Vendor released the new version 2.7.6.612
2005.08.24 Advisory Released
