# CVE-2019-13132: libzmq5: In ZeroMQ libzmq before 4.0.9, 4.1.x before 4.1.7, and 4.2.x before 4.3.2, a remote, unauthenticated client connectin...

CVE-2019-13132 is fixed in libzmq5 on 1 platform by libzmq5 4.2.5-1ubuntu0.2 (version 4.2.5-1ubuntu0.2), released July 8, 2019. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2019-13132
- Priority: High
- CVSS: n/a (High)
- EPSS: 0.4246
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Jul 8, 2019

## Description

In ZeroMQ libzmq before 4.0.9, 4.1.x before 4.1.7, and 4.2.x before 4.3.2, a remote, unauthenticated client connecting to a libzmq application, running with a socket listening with CURVE encryption/authentication enabled, may cause a stack overflow and overwrite the stack with arbitrary data, due to a buffer overflow in the library. Users running public servers with the above configuration are highly encouraged to upgrade as soon as possible, as there are no known mitigations.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | libzmq5 Ubuntu 18.04.6 LTS (bionic) | 4.2.5-1ubuntu0.2 | [libzmq5 4.2.5-1ubuntu0.2](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libzmq5-4.2.5-1ubuntu0.2.md) | Jul 8, 2019 |

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