CVE-2016-2563

CRITICAL

9bis Kitty < 0.66.6.3 - Memory Corruption

Title source: rule

Description

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.

Exploits (1)

exploitdb WORKING POC

by tintinweb · textdosmultiple

https://www.exploit-db.com/exploits/39551

View Code ZIP pw:eip

References (7)

[Mailing List] http://lists.opensuse.org/opensuse-updates/2016-05/msg00131.html

[Mailing List] http://seclists.org/fulldisclosure/2016/Mar/22

[Patch] http://www.chiark.greenend.org.uk/~sgtatham/putty/wishlist/vuln-pscp-sink-sscanf.html

[Third Party Advisory, VDB Entry] http://www.securitytracker.com/id/1035257

[Vendor Advisory] https://github.com/tintinweb/pub/tree/master/pocs/cve-2016-2563

[Third Party Advisory, VDB Entry] http://www.securityfocus.com/bid/84296

[Third Party Advisory] https://security.gentoo.org/glsa/201606-01

Scores

CVSS v3 9.8

EPSS 0.2863

EPSS Percentile 96.5%

Attack Vector NETWORK

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Classification

CWE

CWE-119

Status draft

Affected Products (2)

9bis/kitty < 0.66.6.3

simon_tatham/putty < 0.66

Timeline

Published Apr 07, 2016

Tracked Since Feb 18, 2026