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Exposure of Sensitive Information to an Unauthorized Actor


Severity High
Score 7.5/10


The Apache Qpid Broker for Java can be configured to use different so called "AuthenticationProviders" to handle user authentication. Among the choices are the "SCRAM-SHA-1" and "SCRAM-SHA-256" "AuthenticationProvider" types. It was discovered that these "AuthenticationProviders" in Apache Qpid Broker for Java before 6.0.6 and 6.1.0 prematurely terminate the "SCRAM SASL" negotiation if the provided user name does not exist thus allowing remote attacker to determine the existence of user accounts. The Vulnerability does not apply to "AuthenticationProviders" other than "SCRAM-SHA-1" and "SCRAM-SHA-256".

  • LOW
  • NONE
  • NONE
  • NONE
  • HIGH
  • NONE

CWE-200 - Information Exposure

An information exposure vulnerability is categorized as an information flow (IF) weakness, which can potentially allow unauthorized access to otherwise classified information in the application, such as confidential personal information (demographics, financials, health records, etc.), business secrets, and the application's internal environment.

Advisory Timeline

  • Published