#VU95 Authentication bypass in VTScada - CVE-2016-4510

Vulnerability identifier: #VU95

Vulnerability risk: Critical

CVSSv4.0: 8.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Red]

CVE-ID: CVE-2016-4510

CWE-ID: CWE-255

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
VTScada
Server applications / SCADA systems

Vendor: Trihedral Engineering Ltd

Description
The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due improper validation of user-supplied filenames. A remote unauthenticated attacker can download or view arbitrary files.

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

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External links
https://ics-cert.us-cert.gov/advisories/ICSA-16-159-01

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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.