Path traversal in VTScada

1) Path traversal

EUVDB-ID: #VU92

Risk: Critical

CVSSv3.1: 8.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2016-4532

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

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on vulnerable installations of Trihedral VTScada.

The vulnerability exists within the handling of Wireless Application Protocol requests. A remote unauthenticated attacker can cause arbitrary code execution by replacing the path in a request to retrieve any file.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Trihedral Engineering Ltd. has created an updated software version 11.2.02, available at:

ftp://ftp.trihedral.com/VTS/

Vulnerable software versions

VTScada: 9 - 11.1

External links

http://ics-cert.us-cert.gov/advisories/ICSA-16-159-01

Q & A

Can this vulnerability be exploited remotely?

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

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

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