ZyXEL P660HN-T1A up to 7.3.37.6 Remote System Log Forwarder logSet.asp ServerIP command injection

Summaryinfo

A vulnerability was found in ZyXEL P660HN-T1A up to 7.3.37.6. It has been classified as critical. This affects an unknown function of the file logSet.asp of the component Remote System Log Forwarder. Performing a manipulation of the argument ServerIP as part of Parameter results in command injection. This vulnerability is reported as CVE-2017-18370. The attack is possible to be carried out remotely. No exploit exists.

Detailsinfo

A vulnerability classified as critical has been found in ZyXEL P660HN-T1A up to 7.3.37.6 (Router Operating System). This affects an unknown code block of the file logSet.asp of the component Remote System Log Forwarder. The manipulation of the argument ServerIP as part of a Parameter leads to a command injection vulnerability. CWE is classifying the issue as CWE-77. The product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

The ZyXEL P660HN-T1A v2 TCLinux Fw #7.3.37.6 router distributed by TrueOnline has a command injection vulnerability in the Remote System Log forwarding function, which is only accessible by an authenticated user. The vulnerability is in the logSet.asp page and can be exploited through the ServerIP parameter. Authentication can be achieved by exploiting CVE-2017-18371.

The weakness was disclosed 05/02/2019. This vulnerability is uniquely identified as CVE-2017-18370 since 05/02/2019. It is possible to initiate the attack remotely. The requirement for exploitation is a authentication. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 09/11/2023). The attack technique deployed by this issue is T1202 according to MITRE ATT&CK.

By approaching the search of inurl:logSet.asp it is possible to find vulnerable targets with Google Hacking.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The entries VDB-134311, VDB-134308 and VDB-134305 are pretty similar. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

• Router Operating System

Vendor

• ZyXEL

Name

• P660HN-T1A

Version

• 7.3.37.0
• 7.3.37.1
• 7.3.37.2
• 7.3.37.3
• 7.3.37.4
• 7.3.37.5
• 7.3.37.6

License

• commercial

Website

• Vendor: https://www.zyxel.com/

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Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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