Privilege escalation in Johnson Controls Metasys



Published: 2021-06-09
Risk Medium
Patch available NO
Number of vulnerabilities 1
CVE-ID CVE-2021-27657
CWE-ID CWE-269
Exploitation vector Network
Public exploit N/A
Vulnerable software
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Metasys System
Universal components / Libraries / Software for developers

Vendor Johnson Controls

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Improper Privilege Management

EUVDB-ID: #VU53993

Risk: Medium

CVSSv3.1: 8.1 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:U/RC:C]

CVE-ID: CVE-2021-27657

CWE-ID: CWE-269 - Improper Privilege Management

Exploit availability: No

Description

The vulnerability allows a remote attacker to escalate privileges.

The vulnerability exists due to Metasys servers, engines and tools do not properly assign, modify, track or check privileges for an actor. A remote authenticated attacker can escalate privileges.

Mitigation

Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Vulnerable software versions

Metasys System: 11.0

External links

http://www.johnsoncontrols.com/cyber-solutions/security-advisories
http://us-cert.cisa.gov/ics/advisories/icsa-21-159-01


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

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



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