CVE-2023-49800 : What You Need to Know

A detailed article on CVE-2023-49800 focusing on denial of service by abusing

fetchOptions.retry

in nuxt-api-party.

Understanding CVE-2023-49800

This CVE involves a vulnerability in the

nuxt-api-party

library, allowing an attacker to cause a denial of service by exploiting the retry logic, resulting in a stack overflow.

What is CVE-2023-49800?

The CVE-2023-49800 refers to a flaw in the

nuxt-api-party

module that can be exploited by a malicious user to crash the server through a stack overflow, causing a denial of service.

The Impact of CVE-2023-49800

The impact of this vulnerability is significant, with a high availability impact and a CVSS base score of 7.5 (High severity). It can lead to a complete service disruption.

Technical Details of CVE-2023-49800

This section covers the vulnerability description, affected systems, and the exploitation mechanism.

Vulnerability Description

The vulnerability arises due to the lack of filtering on

fetchOptions.retry

in

nuxt-api-party

, enabling attackers to crash the server via a stack overflow by setting the retry attempts to a high value.

Affected Systems and Versions

The affected system is the

nuxt-api-party

library, specifically versions prior to 0.22.1. Users with versions below 0.22.1 are at risk of exploitation.

Exploitation Mechanism

By manipulating the retry attempts and sending a known unsuccessful URL, attackers can trigger a stack overflow in the server, leading to a denial of service condition.

Mitigation and Prevention

This section outlines the steps to mitigate the CVE-2023-49800 risk and prevent future occurrences.

Immediate Steps to Take

Users are strongly advised to update

nuxt-api-party

to version 0.22.1 or newer to patch the vulnerability. Additionally, limiting

ofetch

options can also reduce the risk of exploitation.

Long-Term Security Practices

To enhance long-term security, it is recommended to regularly update software dependencies, implement robust input validation, and follow secure coding practices.

Patching and Updates

Stay informed about security advisories and patches released by the library maintainer. Promptly apply updates to ensure protection against known vulnerabilities.