Path traversal in serve npm module



| Updated: 2019-05-27
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
 serve
Web applications / JS libraries

Vendor Zeit

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Path traversal

EUVDB-ID: #VU18599

Risk: Medium

CVSSv4.0: 7.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:P/U:Green]

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 improper input validation of user-supplied data passed via URI. A remote attacker can send a specially crafted HTTP request and read arbitrary files on the system.

Example: 

http://[host]/public/%2e%2e/%2e%2e/%2e%2e/%2e%2e/%2e%2e/etc/passwd

Mitigation

Install updates from vendor's website.

Vulnerable software versions

serve: 0.1.0 - 10.1.2

CPE2.3 External links

https://hackerone.com/reports/510043


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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