SuiteCRM: isSelfRequest() bypass via substring match allows SSRF to internal services

Summary

SuiteCRM is an open-source, enterprise-ready Customer Relationship Management (CRM) software application. Prior to 7.15.2 and 8.10.2, the SSRF protection added in 7.15.1 uses a substring comparison in isSelfRequest() rather than hostname equality. The affected flow begins at validate_external_host() and uses isSelfRequest(), and stripos() to carry attacker-controlled data or authorization state into the security-sensitive operation. An authenticated attacker can place the server hostname in a URL path to bypass IP validation and direct server-side requests to internal services. This issue is fixed in versions 7.15.2 and 8.10.2.

Remediation

1. Inventory every SuiteCRM SuiteCRM deployment, including staging.
2. No fixed version appears in the public sources yet. Check the references below and the vendor directly.

References

• Referencehttps://github.com/SuiteCRM/SuiteCRM/security/advisories/GHSA-r665-27q3-wvg8
• Referencehttps://github.com/SuiteCRM/SuiteCRM-Core/commit/a11f50180d939f639cc468b5d536e8ad714dfb68
• Referencehttps://github.com/SuiteCRM/SuiteCRM/commit/d6bca97a0159ec019a969b86eca32affab3beb7c
• Referencehttps://github.com/SuiteCRM/SuiteCRM-Core/releases/tag/v8.10.2
• Referencehttps://github.com/SuiteCRM/SuiteCRM/releases/tag/v7.15.2