Priviledge escalation in Johnson Controls exacqVision ESM

1) Insecure filesustem permissions

EUVDB-ID: #VU18809

Risk: Low

CVSSv3.1: 7 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C]

CVE-ID: CVE-2019-7588

CWE-ID: CWE-732 - Incorrect Permission Assignment for Critical Resource

Exploit availability: No

Description

The vulnerability allows a local attacker to bypass authorization on the target system.

The vulnerability exists due to the software allows by default excessive permissions to directories granted to authorized, low-privilege system accounts. A local authenticated attacker can make application file changes and escalate privilege on the system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

exacqVision Enterprise System Manager: 5.12.2

External links

http://ics-cert.us-cert.gov/advisories/ICSA-19-164-01

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.

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.

The attacker would have to login to the system and perform certain actions in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.