#VU57165 Integer overflow in exacqVision Server - CVE-2021-27665

Vulnerability identifier: #VU57165

Vulnerability risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2021-27665

CWE-ID: CWE-190

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
exacqVision Server
Client/Desktop applications / Software for system administration

Vendor: Johnson Controls

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to integer overflow. A remote attacker can pass specially crafted data to the application, trigger integer overflow and cause a denial of service condition on the target system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

exacqVision Server: 21.06.11.0

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External links
https://ics-cert.us-cert.gov/advisories/icsa-21-280-03
https://www.johnsoncontrols.com/-/media/jci/cyber-solutions/product-security-advisories/2021/jci-psa-2021-18.pdf?la=en&hash=D5577A925D77BDFA025AAB3708AACC1A0B62AF67
https://www.tenable.com/security/research/tra-2021-40

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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.