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Remote code execution in Moxa EDR-G902 and EDR-G903 Series Routers



Published: 2020-07-15
Severity High
Patch available YES
Number of vulnerabilities 1
CVE ID CVE-2020-14511
CWE ID CWE-121
Exploitation vector Network
Public exploit N/A
Vulnerable software
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EDR-G902 Series
Hardware solutions / Routers & switches, VoIP, GSM, etc

EDR-G903 Series
Hardware solutions / Routers & switches, VoIP, GSM, etc

Vendor Moxa

Security Advisory

This security advisory describes one high risk vulnerability.

1) Stack-based buffer overflow

Severity: High

CVSSv3: 8.5 [CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C] [PCI]

CVE-ID: CVE-2020-14511

CWE-ID: CWE-121 - Stack-based Buffer Overflow

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error in the system web server. A remote unauthenticated attacker can perform malicious operation with the crafted web browser cookie, trigger stack-based buffer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

EDR-G902 Series: 5.0, 5.3, 5.4

EDR-G903 Series: 5.0, 5.3, 5.4

CPE External links

https://ics-cert.us-cert.gov/advisories/icsa-20-196-02
https://www.moxa.com/en/support/support/security-advisory/edr-g902-g903-series-secure-routers-vulnerabilities

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected device in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.