Vulnerability · Published Feb 13, 2020 · Assigned by zdi

CVE-2020-8858

High 8.8

In plain English

A high-severity OS command injection in MGate 5105-MB-EIP from Moxa. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 8.6% (higher than 95% of all known vulnerabilities).

Severity (CVSS 3.0)8.8High

Exploit odds (30 days)8.6%top 4.9% of all CVEs

Exploited in the wildNo reportsnot in CISA KEV

Attack toolingNoneno public tooling known

Official 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.

Affected products (as reported)

Vendor	Product	Versions
Moxa	MGate 5105-MB-EIP	firmware version 4.1

Weakness: CWE-78 · Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References

https://www.zerodayinitiative.com/advisories/ZDI-20-214/ x_refsource_MISC
https://www.moxa.com/en/support/support/security-advisory/mgate-5105-mb-eip-series-protocol-gateways-vulnerability x_refsource_MISC