| Package | Affected versions | Patched versions |
|---|---|---|
| libzmq | ≥ 4.2.0, < 4.3.3 | 4.3.3 |
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.
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