CVE-2017-16221

Description

Affected versions of `yzt` resolve relative file paths, resulting in a directory traversal vulnerability. A malicious actor can use this vulnerability to access files outside of the intended directory root, which may result in the disclosure of private files on the vulnerable system. **Example request:** ```http GET /../../../../../../../../../../etc/passwd HTTP/1.1 host:foo ``` ## Recommendation No patch is available for this vulnerability. It is recommended that the package is only used for local development, and if the functionality is needed for production, a different package is used instead.

How to fix CVE-2017-16221

No fixed version has been published yet. Mitigate by removing the affected package or applying upstream guidance from the references below.

• —no fix listed

Is CVE-2017-16221 being exploited?

Low — EPSS is 0.5%, meaning exploitation activity has not been observed at scale.

Affected packages (1)

• >= 0.0.0

CVSS scores

References (3)

• ADVISORYnvd.nist.gov/vuln/detail/CVE-2017-16221
• WEBgithub.com/JacksonGL/NPM-Vuln-PoC/blob/master/directory-traversal/yzt
• WEBwww.npmjs.com/advisories/416