Authentication bypass in VTScada

1) Authentication bypass

EUVDB-ID: #VU95

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-2016-4510

CWE-ID: CWE-255 - Credentials Management

Exploit availability: No

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

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.