CVE-2023-38492: Kirby is a content management system. A vulnerability in ver..
getkirby
•
Jul 27, 2023
•
Aug 3, 2023
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:
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.
Severity
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__
Learn from academy
What is API?
Types of APIs
REST API
GraphQL
JSON-RPC
XML-RPC
SOAP API
GraphQL vs REST
REST vs SOAP
GET Method
POST Method
PUT Method
DELETE Method
GET vs POST
PUT vs POST
GraphQL Authentication and Authorization
GraphQL Query
GraphQL Mutation
GraphQL Introspection
GraphQL Pagination
GraphQL Subscription
GraphQL Fragment
API Documentation
Swagger for API Documentation
OpenAPI Specification
Authentication
Authorization
Related tests
JWT authentication bypass via jku header injection
eSMTP - Config Discovery
Nginx - Git Configuration Exposure
Laravel - Sensitive Information Disclosure
Docker Container - Misconfiguration Exposure
Msmtp - Config Exposure
Parameters.yml - File Discovery
Mongo Express - Unauthenticated Access
Apache Airflow Configuration Exposure
Dockerrun AWS Configuration Exposure
Apache Config file disclosure
Appspec Yml Disclosure
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.