serve46 on Node.js URL path traversal

Summaryinfo

A vulnerability has been found in serve46 on Node.js and classified as critical. The impacted element is an unknown function of the component URL Handler. Performing a manipulation with the input ../ results in path traversal. This vulnerability is known as CVE-2017-16148. Remote exploitation of the attack is possible. No exploit is available.

Detailsinfo

A vulnerability classified as critical has been found in serve46 on Node.js (JavaScript Library) (the affected version unknown). This affects an unknown part of the component URL Handler. The manipulation with the input value ../ leads to a path traversal vulnerability. CWE is classifying the issue as CWE-22. The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. This is going to have an impact on confidentiality, and integrity. The summary by CVE is:

serve46 is a static file server. serve46 is vulnerable to a directory traversal issue, giving an attacker access to the filesystem by placing "../" in the url.

The bug was discovered 09/27/2017. The weakness was published 06/07/2018 (Website). It is possible to read the advisory at github.com. This vulnerability is uniquely identified as CVE-2017-16148 since 10/29/2017. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1006 according to MITRE ATT&CK.

The vulnerability was handled as a non-public zero-day exploit for at least 252 days. During that time the estimated underground price was around $0-$5k.

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

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

Productinfo

Type

• JavaScript Library

Name

• serve46

CPE 2.3info

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CPE 2.2info

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