Denial of service in MZ Automation libIEC61850



Published: 2022-02-28 | Updated: 2022-04-19
Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2022-21159
CWE-ID CWE-835
Exploitation vector Network
Public exploit N/A
Vulnerable software
Subscribe 		libIEC61850
Web applications / Modules and components for CMS

Vendor MZ Automation

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Infinite loop

EUVDB-ID: #VU62374

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-21159

CWE-ID: CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')

Exploit availability: No

Description

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

The vulnerability exists due to infinite loop in the parseNormalModeParameters functionality. A remote attacker can consume all available system resources and cause denial of service conditions.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

libIEC61850: 1.5.0

External links

http://talosintelligence.com/vulnerability_reports/TALOS-2022-1467
http://github.com/mz-automation/libiec61850/commit/cfa94cbf10302bedc779703f874ee2e8387a0721
http://www.talosintelligence.com/vulnerability_reports/TALOS-2022-1467


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.



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