CVE-2022-39314 : Exploit Details and Defense Strategies

Kirby CMS versions prior to 3.5.8.2, 3.6.6.2, 3.7.5.1, and 3.8.1 are vulnerable to user enumeration, allowing attackers to potentially identify valid user accounts through excessive login attempts.

Understanding CVE-2022-39314

This CVE describes a vulnerability in Kirby flat-file CMS that enables user enumeration due to improper restriction of excessive authentication attempts.

What is CVE-2022-39314?

Kirby CMS versions below 3.5.8.2, 3.6.6.2, 3.7.5.1, and 3.8.1 are impacted by a user enumeration flaw, which could lead to unauthorized access.

The Impact of CVE-2022-39314

Attackers could use multiple IP addresses and login attempts to identify valid accounts, potentially compromising sensitive information.

Technical Details of CVE-2022-39314

Vulnerability Description

The vulnerability arises from improper handling of authentication attempts, allowing attackers to distinguish between valid and invalid accounts.

Affected Systems and Versions

getkirby: kirby
Versions: 3.5.0 to 3.5.8.2, 2.6.0 to 3.6.6.2, 3.7.0 to 3.7.5.1, and 3.8.1

Exploitation Mechanism

By leveraging the code or password-reset authentication methods and enabling debug options, attackers can trigger user enumeration.

Mitigation and Prevention

Immediate Steps to Take

Users should update Kirby CMS to versions 3.5.8.2, 3.6.6.2, 3.7.5.1, or 3.8.1 to mitigate the vulnerability. Alternatively, disabling code-based login and password reset forms is advised.

Long-Term Security Practices

Enforcing strong password policies and monitoring authentication attempts can help prevent user enumeration attacks.

Patching and Updates

Regularly updating the CMS and following security advisories can help protect systems from known vulnerabilities.