Denial of service in MZ Automation lib60870.NET



Published: 2021-04-26 | Updated: 2021-08-25
Risk Medium
Patch available NO
Number of vulnerabilities 1
CVE-ID CVE-2021-21778
CWE-ID CWE-617
Exploitation vector Network
Public exploit N/A
Vulnerable software
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lib60870.NET
Web applications / Modules and components for CMS

Vendor MZ Automation

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Reachable Assertion

EUVDB-ID: #VU56087

Risk: Medium

CVSSv3.1: 6.9 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:U/RC:C]

CVE-ID: CVE-2021-21778

CWE-ID: CWE-617 - Reachable Assertion

Exploit availability: No

Description

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

The vulnerability exists due to a reachable assertion in the ASDU message processing functionality. A remote attacker can send a specialy crafted request and cause a denial of service (DoS) condition on the target system.

Mitigation

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

Vulnerable software versions

lib60870.NET: 2.2.0

External links

http://www.talosintelligence.com/vulnerability_reports/TALOS-2021-1236


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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