# CVE-2021-45429: yara: A Buffer Overflow vulnerablity exists in VirusTotal YARA git commit: 605b2edf07ed8eb9a2c61ba22eb2e7c362f47ba7 via yr_...

CVE-2021-45429 is fixed in 3 products on 1 platform, first by libyara3 3.7.1-1ubuntu2+esm1, released February 4, 2022. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2021-45429
- Priority: Routine
- CVSS: 5.5 (medium)
- EPSS: 0.0083
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Feb 4, 2022

## Description

A Buffer Overflow vulnerablity exists in VirusTotal YARA git commit: 605b2edf07ed8eb9a2c61ba22eb2e7c362f47ba7 via yr_set_configuration in yara/libyara/libyara.c, which could cause a Denial of Service.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | libyara3 Ubuntu 18.04.6 LTS (bionic) | 3.7.1-1ubuntu2+esm1 | [libyara3 3.7.1-1ubuntu2+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libyara3-3.7.1-1ubuntu2-esm1.md) | Feb 4, 2022 |
| 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 | libyara8 Ubuntu 22.04.1 LTS (jammy) | 4.1.3-1ubuntu0.1~esm1 | [libyara8 4.1.3-1ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-libyara8-4.1.3-1ubuntu0.1-esm1.md) | Feb 4, 2022 |
| Linux | yara Debian 12.15 (bookworm) | 4.2.0-1 | [DEBIAN-CVE-2021-45429](https://patchblox.com/security/data/fix/linux/debian-cve-2021-45429.md) | Feb 4, 2022 |
| Linux | yara Debian 13.5 (trixie) | 4.2.0-1 | [DEBIAN-CVE-2021-45429](https://patchblox.com/security/data/fix/linux/debian-cve-2021-45429.md) | Feb 4, 2022 |
| Linux | yara Debian 14 | 4.2.0-1 | [DEBIAN-CVE-2021-45429](https://patchblox.com/security/data/fix/linux/debian-cve-2021-45429.md) | Feb 4, 2022 |
| Linux | yara Ubuntu 18.04.6 LTS (bionic) | 3.7.1-1ubuntu2+esm1 | [yara 3.7.1-1ubuntu2+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-yara-3.7.1-1ubuntu2-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 |
| Linux | yara Ubuntu 22.04.1 LTS (jammy) | 4.1.3-1ubuntu0.1~esm1 | [yara 4.1.3-1ubuntu0.1~esm1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-yara-4.1.3-1ubuntu0.1-esm1.md) | Feb 4, 2022 |

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Data as of 2026-11-08T13:06:02Z 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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