# CVE-2019-13132: Memory corruption in n/a

> Remote attackers can execute arbitrary code via stack overflow in ZeroMQ when CURVE encryption is enabled.

- **Severity:** Critical 9.8 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 10 Jul 2019
- **Updated:** 4 Aug 2024
- **Also known as:** ALPINE-CVE-2019-13132, DEBIAN-CVE-2019-13132, DLA-1849-1, DSA-4477-1, GHSA-pf98-hx9m-qj7w, MGASA-2019-0323, SUSE-SU-2019:14117-1, SUSE-SU-2019:1776-1, SUSE-SU-2019:1785-1, UBUNTU-CVE-2019-13132, USN-4050-1, openSUSE-SU-2019:1767-1

## What is CVE-2019-13132?

CVE-2019-13132 is a critical memory corruption vulnerability in Canonical Ubuntu Linux, published on 10 Jul 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official 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.

Weakness: CWE-787 (Out-of-bounds Write)

## Which versions are affected by CVE-2019-13132?

It affects 4 products.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `zeromq` | SUSE:Enterprise Storage 4 | All versions | 4.0.4-15.3.1 |
| `zeromq` | SUSE:Enterprise Storage 5 | All versions | 4.0.4-15.3.1 |
| `zeromq` | SUSE:Linux Enterprise Desktop 12 SP4 | All versions | 4.0.4-15.3.1 |
| `zeromq` | SUSE:Linux Enterprise Module for Advanced Systems Management 12 | All versions | 4.0.4-15.3.1 |
| `zeromq` | SUSE:Linux Enterprise Module for Basesystem 15 | All versions | 4.2.3-3.8.1 |
| `zeromq` | SUSE:Linux Enterprise Module for Basesystem 15 SP1 | All versions | 4.2.3-3.8.1 |
| `zeromq` | SUSE:Linux Enterprise Point of Sale 12 SP2 | All versions | 4.0.4-15.3.1 |
| `zeromq` | SUSE:Linux Enterprise Server 11 SP3-CLIENT-TOOLS | All versions | 4.0.4-3.3.1 |
| `zeromq` | SUSE:Linux Enterprise Server 11 SP4-CLIENT-TOOLS | All versions | 4.0.4-3.3.1 |
| `zeromq` | SUSE:Linux Enterprise Software Development Kit 12 SP4 | All versions | 4.0.4-15.3.1 |
| `zeromq` | SUSE:Linux Enterprise Workstation Extension 12 SP4 | All versions | 4.0.4-15.3.1 |
| `zeromq` | SUSE:Manager Client Tools 12 | All versions | 4.0.4-15.3.1 |
| `zeromq` | SUSE:Manager Proxy 3.2 | All versions | 4.0.4-15.3.1 |
| `zeromq` | SUSE:Manager Server 3.2 | All versions | 4.0.4-15.3.1 |
| `zeromq` | openSUSE:Leap 15.0 | All versions | 4.2.3-lp151.5.3.1 |
| `zeromq` | openSUSE:Leap 15.1 | All versions | 4.2.3-lp151.5.3.1 |

Products: Canonical Ubuntu Linux, Debian Debian Linux, Fedoraproject Fedora, Zeromq Libzmq.

## How do I fix CVE-2019-13132?

Upgrade to a fixed version.

## Is CVE-2019-13132 being exploited?

There is no known exploitation of CVE-2019-13132 in the wild and no public exploit code.

Public exploit code:

- CVE-2019-13132 — libzmq CURVE INITIATE stack overflow → RCE. Working exploit + Docker lab. (github_poc): https://github.com/dinosn/cve-2019-13132-lab

## Other vulnerabilities in Canonical Ubuntu Linux

- [CVE-2020-11651](https://insights.sbomify.com/CVE-2020-11651/): SaltStack Salt Authentication Bypass (critical 9.8, exploited in the wild)
- [CVE-2020-7247](https://insights.sbomify.com/CVE-2020-7247/): OpenSMTPD Remote Code Execution (critical 9.8, exploited in the wild)
- [CVE-2019-16928](https://insights.sbomify.com/CVE-2019-16928/): Exim Out-of-bounds Write (critical 9.8, exploited in the wild)
- [CVE-2018-6789](https://insights.sbomify.com/CVE-2018-6789/): Exim Buffer Overflow (critical 9.8, exploited in the wild)
- [CVE-2015-2590](https://insights.sbomify.com/CVE-2015-2590/): Oracle Java SE and Java SE Embedded Remote Code Execution (critical 9.8, exploited in the wild)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2019-13132 and fix it if it is affected.

What it is: CVE-2019-13132 is a critical memory corruption vulnerability in Canonical Ubuntu Linux, published on 10 Jul 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2019-13132 in the wild and no public exploit code.

Affected product: Canonical Ubuntu Linux. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2019-13132/ (Markdown: https://insights.sbomify.com/CVE-2019-13132/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2019-13132
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2019-13132
- OSV: https://osv.dev/vulnerability/CVE-2019-13132

---
From sbomify Insights: https://insights.sbomify.com/CVE-2019-13132/
Summaries are generated and may contain mistakes; the official description above is the record.