CVE-2021-33623

The trim-newlines package before 3.0.1 and 4.x before 4.0.1 for Node.js has an issue related to regular expression denial-of-service (ReDoS) for the .end() method.

Weakness

The product does not properly control the allocation and maintenance of a limited resource.

Affected Software

Potential Mitigations

• Mitigation of resource exhaustion attacks requires that the target system either:

• The first of these solutions is an issue in itself though, since it may allow attackers to prevent the use of the system by a particular valid user. If the attacker impersonates the valid user, they may be able to prevent the user from accessing the server in question.

• The second solution is simply difficult to effectively institute – and even when properly done, it does not provide a full solution. It simply makes the attack require more resources on the part of the attacker.

Related Attack Patterns

• https://cwe.mitre.org/data/definitions/147.html
• https://cwe.mitre.org/data/definitions/227.html
• https://cwe.mitre.org/data/definitions/492.html

References

• https://github.com/sindresorhus/trim-newlines/releases/tag/v4.0.1
• https://lists.debian.org/debian-lts-announce/2022/12/msg00033.html
• https://security.netapp.com/advisory/ntap-20210702-0007/
• https://www.npmjs.com/package/trim-newlines
• https://github.com/sindresorhus/trim-newlines/releases/tag/v4.0.1
• https://lists.debian.org/debian-lts-announce/2022/12/msg00033.html
• https://security.netapp.com/advisory/ntap-20210702-0007/
• https://www.npmjs.com/package/trim-newlines