Uncontrolled Resource Consumption
An issue has been discovered in GitLab CE/EE affecting all versions starting with version 8.10. It was possible to trigger a timeout on a page with markdown by using a specific amount of block-quotes.
CWE-400 - Uncontrolled resource consumption
An uncontrolled resource allocation attack (also known as resource exhaustion attack) triggers unauthorized overconsumption of the limited resources in an application, such as memory, file system storage, database connection pool entries, and CPU. This may lead to denial of service for valid users and degradation of the application's functionality as well as that of the host operating system.