# CVE-2019-0804: Azure Linux Agent Information Disclosure Vulnerability

CVE-2019-0804 is fixed in 2 products on 1 platform, first by walinuxagent 2.2.32-0ubuntu1~18.04.2, released March 11, 2019. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2019-0804
- Priority: Routine
- CVSS: 6.5 (Important)
- EPSS: 0.0519
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Mar 11, 2019
- Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2019-0804

## Description

<p>An information disclosure vulnerability exists in the way Azure WaLinuxAgent creates swap files on resource disks. An authenticated attacker who successfully exploited this vulnerability could view data in swap that is normally hidden.</p> <p>None of the Azure endorsed <a href="https://docs.microsoft.com/en-us/azure/virtual-machines/linux/endorsed-distros">distros</a> are vulnerable to this issue by default, but this can occur on customer customized or modified images when swapfile is created by the Azure linux agent and python3 is enabled as the default python version.</p> <p>This update addresses this vulnerability by preventing how the swap information is accessed.</p>

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | WALinuxAgent RHEL 8 | 0:2.2.32-1.el8_0.1 | [RHSA-2019:1527](https://patchblox.com/security/data/fix/linux/rhsa-2019-1527.md) | Jun 18, 2019 |
| Linux | WALinuxAgent ol 8 | 0:2.2.32-1.0.1.el8_0.1 | [ELSA-2019-1527](https://patchblox.com/security/data/fix/linux/elsa-2019-1527.md) | Jul 30, 2019 |
| Linux | walinuxagent Ubuntu 18.04.6 LTS (bionic) | 2.2.32-0ubuntu1~18.04.2 | [walinuxagent 2.2.32-0ubuntu1~18.04.2](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-walinuxagent-2.2.32-0ubuntu1-18.04.2.md) | Mar 11, 2019 |

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Data as of 2026-11-07T18:46:35Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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