CVE-2020-8858

Description

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Moxa MGate 5105-MB-EIP firmware version 4.1. Authentication is required to exploit this vulnerability. The specific flaw exists within the DestIP parameter within MainPing.asp. The issue results from the lack of proper validation of a user-supplied string before using it to execute a system call. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-9552.

Category

8.8
CVSS
Severity: High
CVSS 3.1 •
CVSS 3.0 •
CVSS 2.0 •
EPSS 23.24% Top 5%
Vendor Advisory moxa.com
Affected: Moxa MGate 5105-MB-EIP
Published at:
Updated at:

References

Link Tags
https://www.zerodayinitiative.com/advisories/ZDI-20-214/ vdb entry third party advisory
https://www.moxa.com/en/support/support/security-advisory/mgate-5105-mb-eip-series-protocol-gateways-vulnerability vendor advisory

Frequently Asked Questions

What is the severity of CVE-2020-8858?
CVE-2020-8858 has been scored as a high severity vulnerability.
How to fix CVE-2020-8858?
To fix CVE-2020-8858, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2020-8858 being actively exploited in the wild?
It is possible that CVE-2020-8858 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~23% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2020-8858?
CVE-2020-8858 affects Moxa MGate 5105-MB-EIP.
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