# CVE-2019-12855: python3-twisted: In words.protocols.jabber.xmlstream in Twisted through 19.2.1, XMPP support did not verify certificates when used wit...

CVE-2019-12855 is fixed in 12 products on 1 platform, first by python-twisted 17.9.0-2ubuntu0.1, released March 12, 2020. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2019-12855
- Priority: Routine
- CVSS: n/a (Low)
- EPSS: 0.0181
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Jun 16, 2019

## Description

In words.protocols.jabber.xmlstream in Twisted through 19.2.1, XMPP support did not verify certificates when used with TLS, allowing an attacker to MITM connections.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | python-twisted Ubuntu 18.04.6 LTS (bionic) | 17.9.0-2ubuntu0.1 | [python-twisted 17.9.0-2ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-python-twisted-17.9.0-2ubuntu0.1.md) | Mar 12, 2020 |
| Linux | python-twisted-bin Ubuntu 18.04.6 LTS (bionic) | 17.9.0-2ubuntu0.1 | [python-twisted-bin 17.9.0-2ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-python-twisted-bin-17.9.0-2ubuntu0.1.md) | Mar 12, 2020 |
| Linux | python-twisted-conch Ubuntu 18.04.6 LTS (bionic) | 1:17.9.0-2ubuntu0.1 | [python-twisted-conch 1:17.9.0-2ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-python-twisted-conch-1-17.9.0-2ubuntu0.1.md) | Mar 12, 2020 |
| Linux | python-twisted-core Ubuntu 18.04.6 LTS (bionic) | 17.9.0-2ubuntu0.1 | [python-twisted-core 17.9.0-2ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-python-twisted-core-17.9.0-2ubuntu0.1.md) | Mar 12, 2020 |
| Linux | python-twisted-mail Ubuntu 18.04.6 LTS (bionic) | 17.9.0-2ubuntu0.1 | [python-twisted-mail 17.9.0-2ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-python-twisted-mail-17.9.0-2ubuntu0.1.md) | Mar 12, 2020 |
| Linux | python-twisted-names Ubuntu 18.04.6 LTS (bionic) | 17.9.0-2ubuntu0.1 | [python-twisted-names 17.9.0-2ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-python-twisted-names-17.9.0-2ubuntu0.1.md) | Mar 12, 2020 |
| Linux | python-twisted-news Ubuntu 18.04.6 LTS (bionic) | 17.9.0-2ubuntu0.1 | [python-twisted-news 17.9.0-2ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-python-twisted-news-17.9.0-2ubuntu0.1.md) | Mar 12, 2020 |
| Linux | python-twisted-runner Ubuntu 18.04.6 LTS (bionic) | 17.9.0-2ubuntu0.1 | [python-twisted-runner 17.9.0-2ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-python-twisted-runner-17.9.0-2ubuntu0.1.md) | Mar 12, 2020 |
| Linux | python-twisted-web Ubuntu 18.04.6 LTS (bionic) | 17.9.0-2ubuntu0.1 | [python-twisted-web 17.9.0-2ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-python-twisted-web-17.9.0-2ubuntu0.1.md) | Mar 12, 2020 |
| Linux | python-twisted-words Ubuntu 18.04.6 LTS (bionic) | 17.9.0-2ubuntu0.1 | [python-twisted-words 17.9.0-2ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-python-twisted-words-17.9.0-2ubuntu0.1.md) | Mar 12, 2020 |
| Linux | python3-twisted Ubuntu 18.04.6 LTS (bionic) | 17.9.0-2ubuntu0.1 | [python3-twisted 17.9.0-2ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-python3-twisted-17.9.0-2ubuntu0.1.md) | Mar 12, 2020 |
| Linux | python3-twisted-bin Ubuntu 18.04.6 LTS (bionic) | 17.9.0-2ubuntu0.1 | [python3-twisted-bin 17.9.0-2ubuntu0.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-python3-twisted-bin-17.9.0-2ubuntu0.1.md) | Mar 12, 2020 |

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