Moxa EDR-810 4.1 Build 17030317 Web Server /goform/WebRSAKEYGen rsakey\_name os command injection

Summaryinfo

A vulnerability described as critical has been identified in Moxa EDR-810 4.1 Build 17030317. The impacted element is an unknown function of the file /goform/WebRSAKEYGen of the component Web Server. The manipulation of the argument rsakey\_name results in os command injection. This vulnerability is identified as CVE-2017-12121. The attack can be executed remotely. There is not any exploit available. Applying restrictive firewalling is recommended.

Detailsinfo

A vulnerability, which was classified as critical, was found in Moxa EDR-810 4.1 Build 17030317 (Automation Software). Affected is an unknown code block of the file /goform/WebRSAKEYGen of the component Web Server. The manipulation of the argument rsakey\_name with an unknown input leads to a os command injection vulnerability. CWE is classifying the issue as CWE-78. The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

An exploitable command injection vulnerability exists in the web server functionality of Moxa EDR-810 V4.1 build 17030317. A specially crafted HTTP POST can cause a privilege escalation resulting in root shell. An attacker can inject OS commands into the rsakey\_name= parm in the "/goform/WebRSAKEYGen" uri to trigger this vulnerability.

The bug was discovered 04/13/2018. The weakness was released 05/14/2018 (Website). The advisory is shared for download at talosintelligence.com. This vulnerability is traded as CVE-2017-12121 since 07/31/2017. It is possible to launch the attack remotely. The requirement for exploitation is a authentication. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1202.

The vulnerability was handled as a non-public zero-day exploit for at least 31 days. During that time the estimated underground price was around $0-$5k.

It is possible to mitigate the weakness by firewalling .

Entries connected to this vulnerability are available at VDB-117700, VDB-117699, VDB-117698 and VDB-117697. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

• Automation Software

Vendor

• Moxa

Name

• EDR-810

Version

• 4.1 Build 17030317

License

• commercial

Website

• Vendor: https://www.moxa.com/

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Entryinfo

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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