Open Social - Moderately critical - Cross Site Scripting, Denial of Service - SA-CONTRIB-2024-037

Project: Open SocialDate: 2024-September-04Security risk: Moderately critical 13∕25 AC:Basic/A:User/CI:Some/II:Some/E:Theoretical/TD:DefaultVulnerability: Cross Site Scripting, Denial of ServiceAffected versions: <12.3.8 || >=12.4.0 <12.4.5 || >=13.0.0 <13.0.0-alpha11Description: Open Social is a Drupal distribution for online communities, which ships with an optional module called Social Embed.
This module allows a website to display embedded content (such as photos or videos) when a user posts a link to that resource, without having to parse the resource directly.
Added URL's were not sufficiently validated which could lead to a DoS via Blind SSRF and/or Application Takeover via Stored XSS.
This vulnerability is mitigated by the fact that social_embed submodule needs to be enabled.Solution: Install the latest version:

• If you use Open Social 12.3.x, upgrade to Open Social 12.3.8
• If you use Open Social 12.4.x, upgrade to Open Social 12.4.5

Reported By: 

• Thiago Régis

Fixed By: 

• Thiago Régis
• Ronald te Brake

Coordinated By: 

• Greg Knaddison of the Drupal Security Team
• Juraj Nemec of the Drupal Security Team