Vulnerability Monitor

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CVE-2017-6542

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.

Published

2017-03-27T17:59:00.850

Last Modified

2025-04-20T01:37:25.860

Status

Deferred

Source

[email protected]

Severity

CVSSv3.0: 9.8 (CRITICAL)

CVSSv2 Vector

AV:N/AC:L/Au:N/C:P/I:P/A:P

Access Vector: NETWORK
Access Complexity: LOW
Authentication: NONE
Confidentiality Impact: PARTIAL
Integrity Impact: PARTIAL
Availability Impact: PARTIAL

Exploitability Score

10.0

Impact Score

6.4

Weaknesses

Type: Primary
CWE-119

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	putty	putty	≤ 0.67	Yes
Operating System	opensuse	leap	42.2	Yes
Operating System	opensuse_project	leap	42.1	Yes

References

http://lists.opensuse.org/opensuse-updates/2017-03/msg00055.html Third Party Advisory ([email protected])
http://www.chiark.greenend.org.uk/~sgtatham/putty/wishlist/vuln-agent-fwd-overflow.html Patch, Vendor Advisory ([email protected])
http://www.securityfocus.com/bid/97156 Third Party Advisory, VDB Entry ([email protected])
http://www.securitytracker.com/id/1038067 ([email protected])
https://git.tartarus.org/?p=simon/putty.git%3Ba=commitdiff%3Bh=4ff22863d895cb7ebfced4cf923a012a614adaa8 ([email protected])
https://security.gentoo.org/glsa/201703-03 Third Party Advisory, VDB Entry ([email protected])
https://security.gentoo.org/glsa/201706-09 ([email protected])
https://www.exploit-db.com/exploits/42137/ ([email protected])
http://lists.opensuse.org/opensuse-updates/2017-03/msg00055.html Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.chiark.greenend.org.uk/~sgtatham/putty/wishlist/vuln-agent-fwd-overflow.html Patch, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.securityfocus.com/bid/97156 Third Party Advisory, VDB Entry (af854a3a-2127-422b-91ae-364da2661108)
http://www.securitytracker.com/id/1038067 (af854a3a-2127-422b-91ae-364da2661108)
https://git.tartarus.org/?p=simon/putty.git%3Ba=commitdiff%3Bh=4ff22863d895cb7ebfced4cf923a012a614adaa8 (af854a3a-2127-422b-91ae-364da2661108)
https://security.gentoo.org/glsa/201703-03 Third Party Advisory, VDB Entry (af854a3a-2127-422b-91ae-364da2661108)
https://security.gentoo.org/glsa/201706-09 (af854a3a-2127-422b-91ae-364da2661108)
https://www.exploit-db.com/exploits/42137/ (af854a3a-2127-422b-91ae-364da2661108)