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Category:   Application (File Transfer/Sharing)  >   TFTPD32 Vendors:   Jounin, Philippe
TFTPD32 Can Be Crashed By Remote Users Requesting Long Filenames
SecurityTracker Alert ID:  1012856
SecurityTracker URL:  http://securitytracker.com/id/1012856
CVE Reference:   GENERIC-MAP-NOMATCH   (Links to External Site)
Date:  Jan 12 2005
Impact:   Denial of service via network
Exploit Included:  Yes  
Version(s): 2.74 and prior versions
Description:   A denial of service vulnerability was reported in TFTPD32. A remote user can cause the tftp service to crash.

Sowhat reported that a remote user can connect to the tftp service and send a specially crafted filename to cause the target tftp service to crash. It may take several requests to trigger the flaw.

A demonstration exploit is provided:

tftp -i [target] get AAAAA...[about 508 'A' here]...AA

The vendor has been notified without response.

The original advisory is available at:

http://secway.org/advisory/ad20050112.txt

Impact:   A remote user can cause the tftp service to crash.
Solution:   No solution was available at the time of this entry.
Vendor URL:  tftpd32.jounin.net/ (Links to External Site)
Cause:   Boundary error, Exception handling error
Underlying OS:  Windows (Any)

Message History:   None.


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