It was found that the Apache ActiveMQ client before 5.14.5 exposed a remote shutdown command in the ActiveMQConnection class. An attacker logged into a compromised broker could use this flaw to achieve denial of service on a connected client.

In Apache OpenMeetings 3.0.0 - 4.0.1, CRUD operations on privileged users are not password protected allowing an authenticated attacker to deny service for privileged users.

The qpidd broker in Apache Qpid 0.30 and earlier allows remote authenticated users to cause a denial of service (daemon crash) via an AMQP message with (1) an invalid range in a sequence set, (2) content-bearing methods other than message-transfer, or (3) a session-gap control before a corresponding session-attach.

In Apache Subversion versions up to and including 1.9.10, 1.10.4, 1.12.0, Subversion's svnserve server process may exit when a well-formed read-only request produces a particular answer. This can lead to disruption for users of the server.

Apache Hadoop 0.23.x before 0.23.11 and 2.x before 2.4.1, as used in Cloudera CDH 5.0.x before 5.0.2, do not check authorization for the (1) refreshNamenodes, (2) deleteBlockPool, and (3) shutdownDatanode HDFS admin commands, which allows remote authenticated users to cause a denial of service (DataNodes shutdown) or perform unnecessary operations by issuing a command.

The mod_dav_svn Apache HTTPD server module in Subversion 1.7.0 through 1.7.10 and 1.8.x before 1.8.1 allows remote authenticated users to cause a denial of service (assertion failure or out-of-bounds read) via a certain (1) COPY, (2) DELETE, or (3) MOVE request against a revision root.

The mod_dav_svn Apache HTTPD server module in Subversion 1.6.x before 1.6.21 and 1.7.0 through 1.7.8 allows remote authenticated users to cause a denial of service (NULL pointer dereference and crash) via a LOCK on an activity URL.

A vulnerability in sshd-core of Apache Mina SSHD allows an attacker to overflow the server causing an OutOfMemory error. This issue affects the SFTP and port forwarding features of Apache Mina SSHD version 2.0.0 and later versions. It was addressed in Apache Mina SSHD 2.7.0

Apache Derby before 10.2.1.6 does not determine privilege requirements for lock table statements at compilation time, and consequently does not enforce privilege requirements at execution time, which allows remote authenticated users to lock arbitrary tables.

The client libraries in Apache Thrift before 0.9.3 might allow remote authenticated users to cause a denial of service (infinite recursion) via vectors involving the skip function.

Apache Subversion's mod_dontdothat module and HTTP clients 1.4.0 through 1.8.16, and 1.9.0 through 1.9.4 are vulnerable to a denial-of-service attack caused by exponential XML entity expansion. The attack can cause the targeted process to consume an excessive amount of CPU resources or memory.

qpid-cpp 1.0 crashes when a large message is sent and the Digest-MD5 mechanism with a security layer is in use .

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.

Apache Karaf prior to 4.0.8 used the LDAPLoginModule to authenticate users to a directory via LDAP. However, it did not encoding usernames properly and hence was vulnerable to LDAP injection attacks leading to a denial of service.

The req_check_access function in the mod_authz_svn module in the httpd server in Apache Subversion before 1.8.16 and 1.9.x before 1.9.4 allows remote authenticated users to cause a denial of service (NULL pointer dereference and crash) via a crafted header in a (1) MOVE or (2) COPY request, involving an authorization check.

In Apache James, while fuzzing with Jazzer the IMAP parsing stack, we discover that crafted APPEND and STATUS IMAP command could be used to trigger infinite loops resulting in expensive CPU computations and OutOfMemory exceptions. This can be used for a Denial Of Service attack. The IMAP user needs to be authenticated to exploit this vulnerability. This affected Apache James prior to version 3.6.1. This vulnerability had been patched in Apache James 3.6.1 and higher. We recommend the upgrade.