Stack-based buffer overflow in the SCP command-line utility in PuTTY before 0.67 and KiTTY 0.66.6.3 and earlier allows remote servers to cause a denial of service (stack memory corruption) or execute arbitrary code via a crafted SCP-SINK file-size response to an SCP download request.
The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.
| Link | Tags |
|---|---|
| http://lists.opensuse.org/opensuse-updates/2016-05/msg00131.html | vendor advisory |
| http://www.securitytracker.com/id/1035257 | vdb entry |
| https://security.gentoo.org/glsa/201606-01 | vendor advisory |
| http://www.securityfocus.com/bid/84296 | vdb entry |
| http://www.chiark.greenend.org.uk/~sgtatham/putty/wishlist/vuln-pscp-sink-sscanf.html | patch |
| https://github.com/tintinweb/pub/tree/master/pocs/cve-2016-2563 | vendor advisory |
| http://seclists.org/fulldisclosure/2016/Mar/22 | mailing list |