Buffer overflow in Delta Controls enteliBUS Controllers

1) Buffer overflow

EUVDB-ID: #VU20421

Risk: Medium

CVSSv3.1: 7.7 [CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-9569

CWE-ID: CWE-120 - Buffer overflow

Exploit availability: No

Description

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

The vulnerability exists due to the lack of input validation. A remote attacker on the same network can send a specially crafted request to the affected system, trigger buffer overflow, gain complete control of the device’s operating system and execute arbitrary code on the target system.

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

Mitigation

Install updates from vendor's website.

Vulnerable software versions

enteliBUS Controller firmware: 3.40.571848

enteliBUS Manager Touch firmware: 3.40.571848

enteliBUS Manager firmware: 3.40.571848

External links

http://securingtomorrow.mcafee.com/other-blogs/mcafee-labs/hvacking-understanding-the-delta-between-security-and-reality/
http://www.deltacontrols.com/products/hvac-controls/central-plant-controllers/entelibus

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).

Is there known malware, which exploits this vulnerability?

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