CVE-2017-6542
CRITICAL severity · CVSS 9.8 · Memory corruption
9.8CVSS CRITICAL
Summary
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.
Impact & exploitability
Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
Confidentiality impactHigh
Integrity impactHigh
Availability impactHigh
Exploit probability (EPSS)22%
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected products we track (1)
Recommendation
Apply the vendor fix promptly. Open any affected product above for its exact safe version.
Official patch: http://www.chiark.greenend.org.uk/~sgtatham/putty/wishlist/vuln-agent-fwd-overflow.html ↗
Additional information
- NVD record
- http://www.chiark.greenend.org.uk/~sgtatham/putty/wishlist/vuln-agent-fwd-overflow.htmlPatch
- http://lists.opensuse.org/opensuse-updates/2017-03/msg00055.htmlAdvisory
- http://www.securityfocus.com/bid/97156Advisory
- http://www.securitytracker.com/id/1038067
- https://git.tartarus.org/?p=simon/putty.git%3Ba=commitdiff%3Bh=4ff22863d895cb7ebfced4cf923a012a614adaa8
- https://security.gentoo.org/glsa/201703-03Advisory
- https://security.gentoo.org/glsa/201706-09
- https://www.exploit-db.com/exploits/42137/