Critical severity · published Mar 27, 2017
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…
9.8
CVSS
21.8%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)21.8% · higher than 98% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
LE
Leap · Opensuse
42.2 · source: NVD
PU
Putty · Putty
through 0.67 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2017-6542
CVE.org
https://www.cve.org/CVERecord?id=CVE-2017-6542
Third Party Advisory
http://lists.opensuse.org/opensuse-updates/2017-03/msg00055.html
Patch
http://www.chiark.greenend.org.uk/~sgtatham/putty/wishlist/vuln-agent-fwd-overflow.html
Third Party Advisory
http://www.securityfocus.com/bid/97156
www.securitytracker.com
http://www.securitytracker.com/id/1038067
git.tartarus.org
https://git.tartarus.org/?p=simon/putty.git%3Ba=commitdiff%3Bh=4ff22863d895cb7ebfced4cf923a012a614adaa8
Third Party Advisory
https://security.gentoo.org/glsa/201703-03
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