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Category:   Application (Generic)  >   PuTTY Vendors:   Tatham, Simon
PuTTY Buffer Overflow in SCP Sink Protocol Lets Remote Authenticated Users Execute Arbitrary Code
SecurityTracker Alert ID:  1035257
SecurityTracker URL:  http://securitytracker.com/id/1035257
CVE Reference:   CVE-2016-2563   (Links to External Site)
Date:  Mar 14 2016
Impact:   Execution of arbitrary code via network, User access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 0.66 and prior
Description:   A vulnerability was reported in PuTTY. A remote authenticated user can execute arbitrary code on the target user's system.

A remote authenticated user (server) can return specially crafted file header data via SCP to trigger a buffer overflow and execute arbitrary code on the target user's system. The code will run with the privileges of the target user.

tintinweb reported this vulnerability.

Impact:   A remote authenticated user can execute arbitrary code on the target user's system.
Solution:   The vendor has issued a fix (0.67).

The vendor's advisory is available at:

http://www.chiark.greenend.org.uk/%7Esgtatham/putty/wishlist/vuln-pscp-sink-sscanf.html

Vendor URL:  www.chiark.greenend.org.uk/%7Esgtatham/putty/wishlist/vuln-pscp-sink-sscanf.html (Links to External Site)
Cause:   Boundary error

Message History:   None.


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