# CVE-2020-3810: apt: Missing input validation in the ar/tar implementations of APT before version 2.1.2 could result in denial of service...

CVE-2020-3810 is fixed in 6 products on 1 platform, first by apt 1.6.12ubuntu0.1, released May 12, 2020. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2020-3810
- Priority: Routine
- CVSS: n/a (Medium)
- EPSS: 0.0134
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: May 12, 2020

## Description

Missing input validation in the ar/tar implementations of APT before version 2.1.2 could result in denial of service when processing specially crafted deb files.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | apt Ubuntu 18.04.6 LTS (bionic) | 1.6.12ubuntu0.1 | [apt 1.6.12ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-apt-1.6.12ubuntu0.1.md) | May 12, 2020 |
| Linux | apt Ubuntu 20.04 LTS (focal) | 2.0.2ubuntu0.1 | [apt 2.0.2ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-apt-2.0.2ubuntu0.1.md) | May 12, 2020 |
| Linux | apt-transport-https Ubuntu 18.04.6 LTS (bionic) | 1.6.12ubuntu0.1 | [apt-transport-https 1.6.12ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-apt-transport-https-1.6.12ubuntu0.1.md) | May 12, 2020 |
| Linux | apt-transport-https Ubuntu 20.04 LTS (focal) | 2.0.2ubuntu0.1 | [apt-transport-https 2.0.2ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-apt-transport-https-2.0.2ubuntu0.1.md) | May 12, 2020 |
| Linux | apt-utils Ubuntu 18.04.6 LTS (bionic) | 1.6.12ubuntu0.1 | [apt-utils 1.6.12ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-apt-utils-1.6.12ubuntu0.1.md) | May 12, 2020 |
| Linux | apt-utils Ubuntu 20.04 LTS (focal) | 2.0.2ubuntu0.1 | [apt-utils 2.0.2ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-apt-utils-2.0.2ubuntu0.1.md) | May 12, 2020 |
| Linux | libapt-inst2.0 Ubuntu 18.04.6 LTS (bionic) | 1.6.12ubuntu0.1 | [libapt-inst2.0 1.6.12ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libapt-inst2.0-1.6.12ubuntu0.1.md) | May 12, 2020 |
| Linux | libapt-pkg5.0 Ubuntu 18.04.6 LTS (bionic) | 1.6.12ubuntu0.1 | [libapt-pkg5.0 1.6.12ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libapt-pkg5.0-1.6.12ubuntu0.1.md) | May 12, 2020 |
| Linux | libapt-pkg6.0 Ubuntu 20.04 LTS (focal) | 2.0.2ubuntu0.1 | [libapt-pkg6.0 2.0.2ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libapt-pkg6.0-2.0.2ubuntu0.1.md) | May 12, 2020 |

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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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