# CVE-2019-19648: libyara3: In the macho_parse_file functionality in macho/macho.c of YARA 3.11.0, command_size may be inconsistent with the real...

CVE-2019-19648 is fixed in 2 products on 1 platform, first by libyara3 3.9.0-1ubuntu0.1~esm1, released February 4, 2022. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2019-19648
- Priority: Routine
- CVSS: n/a (Medium)
- EPSS: 0.0154
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Dec 8, 2019

## Description

In the macho_parse_file functionality in macho/macho.c of YARA 3.11.0, command_size may be inconsistent with the real size. A specially crafted MachO file can cause an out-of-bounds memory access, resulting in Denial of Service (application crash) or potential code execution.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | libyara3 Ubuntu 20.04 LTS (focal) | 3.9.0-1ubuntu0.1~esm1 | [libyara3 3.9.0-1ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libyara3-3.9.0-1ubuntu0.1-esm1.md) | Feb 4, 2022 |
| Linux | yara Ubuntu 20.04 LTS (focal) | 3.9.0-1ubuntu0.1~esm1 | [yara 3.9.0-1ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-yara-3.9.0-1ubuntu0.1-esm1.md) | Feb 4, 2022 |

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Data as of 2026-11-08T00:53:09Z 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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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