Denial of service vulnerability in silverstripe-graphql via recursive queries

Summary

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.

Timeline

1. Oct 16, 2023, 6:05 PM UTCCVE published
2. Sep 16, 2024, 5:21 PM UTCCISA SSVC assessment

   Exploitation: none · Automatable: no · Technical impact: partial

3. Sep 16, 2024, 5:21 PM UTCRecord last updated

Affected versions

• silverstripe silverstripe-graphql

  From 3.0.0 · fixed in 3.8.2; From 4.0.0 · fixed in 4.1.3; From 4.2.0 · fixed in 4.2.5; From 4.3.0 · fixed in 4.3.4; From 5.0.0 · fixed in 5.0.3

• silverstripe/graphqlPackagist

  From 3.0.0 · fixed in 3.8.2

• silverstripe/graphqlPackagist

  From 4.0.0 · fixed in 4.1.3

• silverstripe/graphqlPackagist

  From 4.2.0 · fixed in 4.2.5

• silverstripe/graphqlPackagist

  From 4.3.0 · fixed in 4.3.4

• silverstripe/graphqlPackagist

  From 5.0.0 · fixed in 5.0.3

References 5