Vulnerability identifier: #VU77518

Vulnerability risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-43803

CWE-ID: CWE-400

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Next.js
Server applications / Frameworks for developing and running applications

Vendor: Zeit

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to application does not properly control consumption of internal resources. A remote attacker can trigger resource exhaustion and perform a denial of service (DoS) attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Next.js: 11.0.0 - 11.0.1, 11.1.0 - 11.1.2, 12.0.0 - 12.0.4

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External links
http://github.com/vercel/next.js/releases/v12.0.5
http://github.com/vercel/next.js/pull/32080
http://github.com/vercel/next.js/releases/tag/v11.1.3
http://github.com/vercel/next.js/commit/6d98b4fb4315dec1badecf0e9bdc212a4272b264
http://github.com/vercel/next.js/security/advisories/GHSA-25mp-g6fv-mqxx

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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.