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CVE-2023-38492

5.3 · MEDIUM

Kirby is a content management system.

Published Jul 27, 2023CWE-770EPSS 1.18%

Overview

CVE-2023-38492 is a medium-severity vulnerability. It was published on July 27, 2023 and has a CVSS 3.1 base score of 5.3 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 5.3, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

Kirby is a content management system. A vulnerability in versions prior to 3.5.8.3, 3.6.6.3, 3.7.5.2, 3.8.4.1, and 3.9.6 affects all Kirby sites with user accounts (unless Kirby's API and Panel are disabled in the config). The real-world impact of this vulnerability is limited, however we still recommend to update to one of the patch releases because they also fix more severe vulnerabilities.

Kirby's authentication endpoint did not limit the password length. This allowed attackers to provide a password with a length up to the server's maximum request body length. Validating that password against the user's actual password requires hashing the provided password, which requires more CPU and memory resources (and therefore processing time) the longer the provided password gets. This could be abused by an attacker to cause the website to become unresponsive or unavailable. Because Kirby comes with a built-in brute force protection, the impact of this vulnerability is limited to 10 failed

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/getkirby/kirby/commit/0e10ce3b0c2b88656564b8ff518ddc99136ac43eGitHubgithub.com/getkirby/kirby/releases/tag/3.5.8.3GitHubgithub.com/getkirby/kirby/releases/tag/3.6.6.3GitHubgithub.com/getkirby/kirby/releases/tag/3.7.5.2GitHubgithub.com/getkirby/kirby/releases/tag/3.8.4.1GitHubgithub.com/getkirby/kirby/releases/tag/3.9.6GitHubgithub.com/getkirby/kirby/security/advisories/GHSA-3v6j-v3qc-cxffGitHubgithub.com/getkirby/kirby/commit/0e10ce3b0c2b88656564b8ff518ddc99136ac43eGitHubgithub.com/getkirby/kirby/releases/tag/3.5.8.3GitHubgithub.com/getkirby/kirby/releases/tag/3.6.6.3

How CyberStrike helps

Frequently asked questions

What is CVE-2023-38492?

CVE-2023-38492 is a medium-severity vulnerability. It was published on July 27, 2023 and has a CVSS 3.1 base score of 5.3 (MEDIUM).

How severe is CVE-2023-38492?

This vulnerability has a CVSS 3.1 base score of 5.3, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2023-38492?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2023-38492?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2023-38492 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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