CVE-2023-38492: Kirby is a content management system. A vulnerability in ver..

getkirby

Jul 27, 2023

Aug 3, 2023

High

7.5

/

10

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 logins from each IP address and 10 failed logins for each existing user per hour. The problem has been patched in Kirby 3.5.8.3, 3.6.6.3, 3.7.5.2, 3.8.4.1, and 3.9.6. In all of the mentioned releases, the maintainers have added password length limits in the affected code so that passwords longer than 1000 bytes are immediately blocked, both when setting a password and when logging in.

Products affected:

Are your APIs vulnerable to this CWE?

Are your APIs vulnerable to this CWE?

Are your APIs vulnerable to this CWE?

In a few clicks Akto can analyze your API attack surface and see what APIs are vulnerable to OWASP Top 10 and other common CWEs.

Akto BG image
Akto BG image
Akto BG image

Severity

High

High

7.5

/

10

CVSS base metrics

Attack vector

NETWORK

Attack complexity

LOW

Privileges required

LOW

User interaction

NONE

Scope

UNCHANGED

Confidentiality

NONE

Integrity

NONE

Availability

HIGH

Exploitability Score

3.9

Impact Score

3.6

Weakness

CWE-770__CWE-770__

Explore more from Akto

Blog

Be updated about everything related to API Security, new API vulnerabilities, industry news and product updates.

Test Library

Discover and find tests from Akto's 100+ API Security test library. Choose your template or add a new template to start your API Security testing.

Documentation

Check out Akto's product documentation for all information related to features and how to use them.