Vulnerability identifier: #VU108

Vulnerability risk: High

CVSSv3.1: 7.1 [CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2016-6167

CWE-ID: N/A

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
PuTTY
Client/Desktop applications / Software for system administration

Vendor: Simon Tatham

Description
The vulnerability allows a local user to obtain elevated privileges on the target system.

The vulnerability exists due to access control error in PuTTY. A local user can obtain elevated privileges on the target system.by placing a specially crafted DLL (named 'UxTheme.dll' or 'ntmarta.dll') in the same directory as the 'putty.exe'

Successful exploitation of this vulnerability may result in execution of arbitrary code via local system.

Mitigation
Install update from vendor's website.

Vulnerable software versions

PuTTY: 0.67 beta

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Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.