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-rw-r--r--cpp/src/qpid/broker/SaslAuthenticator.cpp8
1 files changed, 8 insertions, 0 deletions
diff --git a/cpp/src/qpid/broker/SaslAuthenticator.cpp b/cpp/src/qpid/broker/SaslAuthenticator.cpp
index 6e78446334..acdb4934d4 100644
--- a/cpp/src/qpid/broker/SaslAuthenticator.cpp
+++ b/cpp/src/qpid/broker/SaslAuthenticator.cpp
@@ -294,6 +294,14 @@ void CyrusAuthenticator::init()
secprops.property_names = 0;
secprops.property_values = 0;
secprops.security_flags = 0; /* or SASL_SEC_NOANONYMOUS etc as appropriate */
+ /*
+ * The nodict flag restricts SASL authentication mechanisms
+ * to those that are not susceptible to dictionary attacks.
+ * They are:
+ * SRP
+ * PASSDSS-3DES-1
+ * EXTERNAL
+ */
if (external.nodict) secprops.security_flags |= SASL_SEC_NODICTIONARY;
int result = sasl_setprop(sasl_conn, SASL_SEC_PROPS, &secprops);
if (result != SASL_OK) {