CVE-2017-6542

CRITICAL

Putty < 0.67 - Memory Corruption

Title source: rule

Description

The ssh_agent_channel_data function in PuTTY before 0.68 allows remote attackers to have unspecified impact via a large length value in an agent protocol message and leveraging the ability to connect to the Unix-domain socket representing the forwarded agent connection, which trigger a buffer overflow.

Exploits (1)

exploitdb WRITEUP VERIFIED

by Tim Kosse · textdoslinux

https://www.exploit-db.com/exploits/42137

View Code ZIP pw:eip

References (8)

[Third Party Advisory] http://lists.opensuse.org/opensuse-updates/2017-03/msg00055.html

[Patch, Vendor Advisory] http://www.chiark.greenend.org.uk/~sgtatham/putty/wishlist/vuln-agent-fwd-overflow.html

[Third Party Advisory, VDB Entry] http://www.securityfocus.com/bid/97156

[Third Party Advisory, VDB Entry] http://www.securitytracker.com/id/1038067

[Various Sources] https://git.tartarus.org/?p=simon/putty.git%3Ba=commitdiff%3Bh=4ff22863d895cb7ebfced4cf923a012a614adaa8

[Third Party Advisory, VDB Entry] https://security.gentoo.org/glsa/201703-03

[Exploit, Third Party Advisory] https://www.exploit-db.com/exploits/42137/

[Third Party Advisory] https://security.gentoo.org/glsa/201706-09

Scores

CVSS v3 9.8

EPSS 0.2215

EPSS Percentile 95.8%

Attack Vector NETWORK

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

Details

CWE

CWE-119

Status published

Products (3)

opensuse/leap 42.2

opensuse_project/leap 42.1

putty/putty < 0.67

Published Mar 27, 2017

Tracked Since Feb 18, 2026