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CVE

Description

SeedDMS versions 6.0.18 and 5.1.25 are prone to stored XSS. The "Add category" functionality inside the "Global keywords" menu does not sanitize user input allowing javascript injection.

POC

Injecting the payload

By pressing the "Add category" button the malicious payload is saved and triggered by the application

Remediation

Escape user input by using "htmlspecialchars" php function

Reference

https://sourceforge.net/p/seeddms/code/ci/6fc17be5d95e8f00fbe5c124c4acd377fa2ce69d/

Timeline

  • [22/03/2022] Vulnerability evidence sent to the vendor
  • [23/03/2022] Vulnerability confirmed by the vendor
  • [23/03/2022] Vulnerability fixed by the vendor

Notes

Thanks to the main developer of SeedDMS, Uwe Steinmann, that immediately acknowledged the vulnerability and fixed it.