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CVE-2019-0200: Apache Qpid Broker-J Denial of Service due to malformed AMQP 0-8 to 0-10 commands

Severity

Critical

Affected components

Qpid Broker-J

Affected versions

6.0.0-7.0.6 and 7.1.0

Fixed versions

7.0.7, 7.1.1

Description

A Denial of Service vulnerability was found in Apache Qpid Broker-J versions 6.0.0-7.0.6 (inclusive) and 7.1.0 which allows an unauthenticated attacker to crash the broker instance by sending specially crafted commands using AMQP protocol versions below 1.0 (AMQP 0-8, 0-9, 0-91 and 0-10).

Resolution

Users of Apache Qpid Broker-J versions 6.0.0-7.0.6 (inclusive) and 7.1.0 utilizing AMQP protocols 0-8, 0-9, 0-91, 0-10 must upgrade to Qpid Broker-J versions 7.0.7 or 7.1.1 or later.

Mitigation

If upgrade of the broker is not possible, the support for AMQP protocols 0-8...0-10 can be disabled on AMQP ports. The change can be made either directly in the broker configuration file or by using management interfaces.

An example of REST API call restricting AMQP port to support only AMQP 1.0 using curl utility is provided below:

sh curl --user <user-name> -X POST -d '{"protocols":["AMQP_1_0"]}' https://<broker host>:<broker port>/api/latest/port/<port name>

References