CVE-2020-8858

high-risk
Published 2020-02-14

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.

Do I need to act?

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18.5% chance of exploitation in next 30 days
EPSS score — higher than 81% of all CVEs
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
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Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
8
CVSS 8.8/10 High
NETWORK / LOW complexity

Affected Products (2)

Affected Vendors

Moxa

References (4)

Vendor Advisory https://www.moxa.com/en/support/support/security-advisory/mgate-5105-mb-eip-seri...
Third Party Advisory https://www.zerodayinitiative.com/advisories/ZDI-20-214/
Vendor Advisory https://www.moxa.com/en/support/support/security-advisory/mgate-5105-mb-eip-seri...
Third Party Advisory https://www.zerodayinitiative.com/advisories/ZDI-20-214/
50
/ 100
high-risk
Severity 30/34 · Critical
Exploitability 13/34 · Low
Exposure 7/34 · Low