DLL loading error in PuTTY



Published: 2016-07-08 | Updated: 2022-10-31
Risk High
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2016-6167
CWE-ID N/A
Exploitation vector Local
Public exploit N/A
Vulnerable software
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PuTTY
Client/Desktop applications / Software for system administration

Vendor Simon Tatham

Security Bulletin

This security bulletin contains one high risk vulnerability.

1) DLL loading error

EUVDB-ID: #VU108

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

Exploit availability: No

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


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.



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