# CVE-2019-25031: libunbound2: Unbound before 1.9.5 allows configuration injection in create_unbound_ad_servers.sh upon a successful man-in-the-midd...

CVE-2019-25031 is fixed in 7 products on 1 platform, first by libunbound2 1.6.7-1ubuntu2.4, released April 26, 2021. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2019-25031
- Priority: Routine
- CVSS: n/a (Medium)
- EPSS: 0.0168
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Apr 26, 2021

## Description

Unbound before 1.9.5 allows configuration injection in create_unbound_ad_servers.sh upon a successful man-in-the-middle attack against a cleartext HTTP session. NOTE: The vendor does not consider this a vulnerability of the Unbound software. create_unbound_ad_servers.sh is a contributed script from the community that facilitates automatic configuration creation. It is not part of the Unbound installation

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | libunbound2 Ubuntu 18.04.6 LTS (bionic) | 1.6.7-1ubuntu2.4 | [libunbound2 1.6.7-1ubuntu2.4](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libunbound2-1.6.7-1ubuntu2.4.md) | Apr 26, 2021 |
| Linux | libunbound8 Ubuntu 20.04 LTS (focal) | 1.9.4-2ubuntu1.2 | [libunbound8 1.9.4-2ubuntu1.2](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libunbound8-1.9.4-2ubuntu1.2.md) | Apr 26, 2021 |
| Linux | python-unbound Ubuntu 18.04.6 LTS (bionic) | 1.6.7-1ubuntu2.4 | [python-unbound 1.6.7-1ubuntu2.4](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-python-unbound-1.6.7-1ubuntu2.4.md) | Apr 26, 2021 |
| Linux | python-unbound Ubuntu 20.04 LTS (focal) | 1.9.4-2ubuntu1.2 | [python-unbound 1.9.4-2ubuntu1.2](https://patchblox.com/security/data/fix/linux/ubuntu-focal-python-unbound-1.9.4-2ubuntu1.2.md) | Apr 26, 2021 |
| Linux | python3-unbound Ubuntu 18.04.6 LTS (bionic) | 1.6.7-1ubuntu2.4 | [python3-unbound 1.6.7-1ubuntu2.4](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-python3-unbound-1.6.7-1ubuntu2.4.md) | Apr 26, 2021 |
| Linux | python3-unbound Ubuntu 20.04 LTS (focal) | 1.9.4-2ubuntu1.2 | [python3-unbound 1.9.4-2ubuntu1.2](https://patchblox.com/security/data/fix/linux/ubuntu-focal-python3-unbound-1.9.4-2ubuntu1.2.md) | Apr 26, 2021 |
| Linux | unbound Ubuntu 18.04.6 LTS (bionic) | 1.6.7-1ubuntu2.4 | [unbound 1.6.7-1ubuntu2.4](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-unbound-1.6.7-1ubuntu2.4.md) | Apr 26, 2021 |
| Linux | unbound Ubuntu 20.04 LTS (focal) | 1.9.4-2ubuntu1.2 | [unbound 1.9.4-2ubuntu1.2](https://patchblox.com/security/data/fix/linux/ubuntu-focal-unbound-1.9.4-2ubuntu1.2.md) | Apr 26, 2021 |
| Linux | unbound-anchor Ubuntu 18.04.6 LTS (bionic) | 1.6.7-1ubuntu2.4 | [unbound-anchor 1.6.7-1ubuntu2.4](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-unbound-anchor-1.6.7-1ubuntu2.4.md) | Apr 26, 2021 |
| Linux | unbound-anchor Ubuntu 20.04 LTS (focal) | 1.9.4-2ubuntu1.2 | [unbound-anchor 1.9.4-2ubuntu1.2](https://patchblox.com/security/data/fix/linux/ubuntu-focal-unbound-anchor-1.9.4-2ubuntu1.2.md) | Apr 26, 2021 |
| Linux | unbound-host Ubuntu 18.04.6 LTS (bionic) | 1.6.7-1ubuntu2.4 | [unbound-host 1.6.7-1ubuntu2.4](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-unbound-host-1.6.7-1ubuntu2.4.md) | Apr 26, 2021 |
| Linux | unbound-host Ubuntu 20.04 LTS (focal) | 1.9.4-2ubuntu1.2 | [unbound-host 1.9.4-2ubuntu1.2](https://patchblox.com/security/data/fix/linux/ubuntu-focal-unbound-host-1.9.4-2ubuntu1.2.md) | Apr 26, 2021 |

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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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