title: Denial of service vulnerability in silverstripe-graphql via recursive queries
description:  silverstripe-graphql is a package which serves Silverstripe data in GraphQL representations. An attacker could use a recursive graphql query to execute a Distributed Denial of Service attack (DDOS attack) against a website. This mostly affects websites with publicly exposed graphql schemas. If your Silverstripe CMS project does not expose a public facing graphql schema, a user account is required to trigger the DDOS attack. If your site is hosted behind a content delivery network (CDN), such as Imperva or CloudFlare, this may further mitigate the risk. This issue has been addressed in versions 3.8.2, 4.1.3, 4.2.5, 4.3.4, and 5.0.3. Users are advised to upgrade. There are no known workarounds for this vulnerability.
problem types: CWE-400: Uncontrolled Resource Consumption
affected:
{
vendor: silverstripe
product: silverstripe-graphql
versions:
version: >= 3.0.0, < 3.8.2, status: affected
version: >= 4.0.0, < 4.1.3, status: affected
version: >= 4.2.0, < 4.2.5, status: affected
version: >= 4.3.0, < 4.3.4, status: affected
version: >= 5.0.0, < 5.0.3, status: affected
}
metrics:
cvssV3_1: [
attackComplexity: LOW
attackVector: NETWORK
availabilityImpact: HIGH
baseScore: 7.5
baseSeverity: HIGH
confidentialityImpact: NONE
integrityImpact: NONE
privilegesRequired: NONE
scope: UNCHANGED
userInteraction: NONE
vectorString: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
version: 3.1
]