#VU45636 Synchronous Access of Remote Resource without Timeout in Niagara and Niagara Enterprise Security - CVE-2020-14483

Vulnerability identifier: #VU45636

Vulnerability risk: Low

CVSSv4.0: 1.3 [CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2020-14483

CWE-ID: CWE-1088

Exploitation vector: Local network

Exploit availability: No

Vulnerable software:
Niagara
Server applications / SCADA systems
Niagara Enterprise Security
Server applications / SCADA systems

Vendor: Tridium

Description

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

The vulnerability exists due to a timeout during a TLS handshake can result in the connection failing to terminate. A remote attacker on the local network can perform a denial of service (DoS) attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Niagara: 4.6.96.28 - 4.8.0.110

Niagara Enterprise Security: 2.4.31 - 4.8.0.35

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External links
https://ics-cert.us-cert.gov/advisories/icsa-20-224-03

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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 local network (LAN).

Is there known malware, which exploits this vulnerability?

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