The policy definition evaluator in Condor before 7.4.2 does not properly handle attributes in a WANT_SUSPEND policy that evaluate to an UNDEFINED state, which allows remote authenticated users to cause a denial of service (condor_startd exit) via a crafted job.

The SessionAdapter::ExchangeHandlerImpl::checkAlternate function in broker/SessionAdapter.cpp in the C++ Broker component in Apache Qpid before 0.6, as used in Red Hat Enterprise MRG before 1.3 and other products, allows remote authenticated users to cause a denial of service (NULL pointer dereference, daemon crash, and cluster outage) by attempting to modify the alternate of an exchange.

The Cluster::deliveredEvent function in cluster/Cluster.cpp in Apache Qpid, as used in Red Hat Enterprise MRG before 1.3 and other products, allows remote attackers to cause a denial of service (daemon crash and cluster outage) via invalid AMQP data.

lib/MessageStoreImpl.cpp in Red Hat Enterprise MRG before 1.2.2 allows remote authenticated users to cause a denial of service (stack memory exhaustion and broker crash) via a large persistent message.

sys/ssl/SslSocket.cpp in qpidd in Apache Qpid, as used in Red Hat Enterprise MRG before 1.2.2 and other products, when SSL is enabled, allows remote attackers to cause a denial of service (daemon outage) by connecting to the SSL port but not participating in an SSL handshake.

Condor 6.5.4 through 7.2.4, 7.3.x, and 7.4.0, as used in MRG, Grid for MRG, and Grid Execute Node for MRG, allows remote authenticated users to queue jobs as an arbitrary user, and thereby gain privileges, by using a Condor command-line tool to modify an unspecified job attribute.