Path traversal in Next.js

1) Path traversal

EUVDB-ID: #VU26476

Risk: Medium

CVSSv4.0: 6.6 [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:U/U:Green]

CVE-ID: CVE-2020-5284

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 input validation error when processing directory traversal sequences. A remote attacker can send a specially crafted HTTP request and read arbitrary files on the system.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Next.js: 1.0.0 - 9.3.1

CPE2.3

• cpe:2.3:a:zeit:nextjs:1.0.2:*:*:*:*:*:*:*
• cpe:2.3:a:zeit:nextjs:1.1.2:*:*:*:*:*:*:*
• cpe:2.3:a:zeit:nextjs:1.2.3:*:*:*:*:*:*:*
• cpe:2.3:a:zeit:nextjs:2.0.1:*:*:*:*:*:*:*
• cpe:2.3:a:zeit:nextjs:2.1.1:*:*:*:*:*:*:*
• cpe:2.3:a:zeit:nextjs:2.2.0:*:*:*:*:*:*:*
• cpe:2.3:a:zeit:nextjs:2.3.2:*:*:*:*:*:*:*
• cpe:2.3:a:zeit:nextjs:2.4.9:*:*:*:*:*:*:*
• cpe:2.3:a:zeit:nextjs:3.0.6:*:*:*:*:*:*:*
• cpe:2.3:a:zeit:nextjs:3.1.0:*:*:*:*:*:*:*

External links

https://github.com/zeit/next.js/releases/tag/v9.3.2
https://github.com/zeit/next.js/security/advisories/GHSA-fq77-7p7r-83rj
https://github.com/vercel/next.js/security/advisories/GHSA-fq77-7p7r-83rj

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.