An uncontrolled resource consumption (memory leak) flaw was found in ZeroMQ's src/xpub.cpp in versions before 4.3.3. This flaw allows a remote unauthenticated attacker to send crafted PUB messages that consume excessive memory if the CURVE/ZAP authentication is disabled on the server, causing a denial of service. The highest threat from this vulnerability is to system availability.
{ "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro", "ubuntu_priority": "low", "binaries": [ { "binary_version": "4.0.4+dfsg-2ubuntu0.1+esm2", "binary_name": "libzmq3" }, { "binary_version": "4.0.4+dfsg-2ubuntu0.1+esm2", "binary_name": "libzmq3-dbg" }, { "binary_version": "4.0.4+dfsg-2ubuntu0.1+esm2", "binary_name": "libzmq3-dbgsym" }, { "binary_version": "4.0.4+dfsg-2ubuntu0.1+esm2", "binary_name": "libzmq3-dev" }, { "binary_version": "4.0.4+dfsg-2ubuntu0.1+esm2", "binary_name": "libzmq3-dev-dbgsym" } ] }
{ "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro", "ubuntu_priority": "low", "binaries": [ { "binary_version": "4.1.4-7ubuntu0.1+esm1", "binary_name": "libzmq3-dev" }, { "binary_version": "4.1.4-7ubuntu0.1+esm1", "binary_name": "libzmq3-dev-dbgsym" }, { "binary_version": "4.1.4-7ubuntu0.1+esm1", "binary_name": "libzmq5" }, { "binary_version": "4.1.4-7ubuntu0.1+esm1", "binary_name": "libzmq5-dbg" }, { "binary_version": "4.1.4-7ubuntu0.1+esm1", "binary_name": "libzmq5-dbgsym" } ] }
{ "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro", "ubuntu_priority": "low", "binaries": [ { "binary_version": "4.2.5-1ubuntu0.2+esm2", "binary_name": "libzmq3-dev" }, { "binary_version": "4.2.5-1ubuntu0.2+esm2", "binary_name": "libzmq5" }, { "binary_version": "4.2.5-1ubuntu0.2+esm2", "binary_name": "libzmq5-dbgsym" } ] }
{ "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro", "ubuntu_priority": "low", "binaries": [ { "binary_version": "4.3.2-2ubuntu1.20.04.1~esm2", "binary_name": "libzmq3-dev" }, { "binary_version": "4.3.2-2ubuntu1.20.04.1~esm2", "binary_name": "libzmq5" }, { "binary_version": "4.3.2-2ubuntu1.20.04.1~esm2", "binary_name": "libzmq5-dbgsym" } ] }