Path Traversal in serve-here.js nmp



Published: 2019-06-28
Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID N/A
CWE-ID CWE-22
Exploitation vector Network
Public exploit Public exploit code for vulnerability #1 is available.
Vulnerable software
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serve-here.js
Web applications / Modules and components for CMS

Vendor npm Inc.

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Path traversal

EUVDB-ID: #VU18922

Risk: Medium

CVSSv3.1: 6.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C]

CVE-ID: N/A

CWE-ID: CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform directory traversal attacks.

The vulnerability exists due to the package accepts pathname of URLs and adds it to the web root without sanitization. A remote attacker can send a specially crafted HTTP request and read arbitrary files on the system.

PoC:

http://[host]/../../../../etc/passswd

Mitigation

Install updates from vendor's website.

Vulnerable software versions

serve-here.js: 0.0.1 - 1.1.3

External links

http://github.com/ChristoPy/serve-here.js/commit/cefb51d03290b6a88dd13143ab2de31b8cf57c39
http://hackerone.com/reports/569966


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.



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