Privilege escalation in Microsoft Windows



Published: 2015-01-13 | Updated: 2017-02-01
Risk Critical
Patch available YES
Number of vulnerabilities 1
CVE ID CVE-2015-0016
CWE ID CWE-22
Exploitation vector Network
Public exploit This vulnerability is being exploited in the wild.
Vulnerable software
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Windows
Operating systems & Components / Operating system

Windows Server
Operating systems & Components / Operating system

Vendor Microsoft

Security Advisory

This security advisory describes one critical risk vulnerability.

1) Path traversal

Risk: Critical

CVSSv3: 8.9 [CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H/E:F/RL:O/RC:C] [PCI]

CVE-ID: CVE-2015-0016

CWE-ID: CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Exploit availability: Yes [Search exploit]

Description

The vulnerability allows a remote attacker to gain elevated privileges on the target system.

The weakness exists due to insufficient validation of user-supplied input within TS WebProxy Windows component. A remote attacker can trick the victim into downloading a specially crafted file and execute it with privileges of the current user.  

Successful exploitation of the vulnerability may result in full control of the vulnerable system.

Note: the vulnerability was being actively exploited.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Windows: 7, 8, 8.1, RT, RT 8.1, Vista

Windows Server: 2008 R2, 2012, 2012 R2

CPE External links

https://technet.microsoft.com/en-us/library/security/ms15-004

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, a fully functional exploit for this vulnerability is available.