PT-2020-5953 · Moxa · Moxa Mgate 5105-Mb-Eip

Charles Perine + 5 · Published 2020-01-06 · Updated 2020-02-19 · CVE-2020-8858

Positive Technologies (AI Summary)

CVSS v2.0

9.0

High

Base vector

AV:N/AC:L/Au:S/C:C/I:C/A:C

Name of the Vulnerable Software and Affected Versions: Moxa MGate 5105-MB-EIP version 4.1

Description: The issue is related to the DestIP parameter in the Moxa MGate 5105-MB-EIP firmware, which lacks proper validation of user-supplied strings before executing system calls. This allows remote attackers to execute arbitrary code, potentially leading to privilege escalation. The exploitation requires authentication. The vulnerability is exploited through the DestIP parameter within the MainPing.asp endpoint.

Recommendations: For version 4.1, consider restricting access to the MainPing.asp endpoint and the DestIP parameter to minimize the risk of exploitation until a patch is available. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

OS Command Injection

Weakness Enumeration

CWE-78

Related Identifiers

BDU:2021-02127

CVE-2020-8858

ZDI-20-214

Affected Products

Moxa Mgate 5105-Mb-Eip

References · 5

• https://moxa.com/en/support/support/security-advisory/mgate-5105-mb-eip-series-protocol-gateways-vulnerability · Vendor Advisory
• https://zerodayinitiative.com/advisories/ZDI-20-214 · Security Note
• https://bdu.fstec.ru/vul/2021-02127 · Security Note
• https://osv.dev/vulnerability/CVE-2020-8858 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2020-8858 · Security Note