# CVE-2017-17689: thunderbird: The S/MIME specification allows a Cipher Block Chaining (CBC)malleability-gadget attack that can indirectly lead to p...

CVE-2017-17689 is fixed in 19 products on 1 platform, first by thunderbird 1:52.8.0+build1-0ubuntu0.18.04.1, released May 22, 2018. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2017-17689
- Priority: Routine
- CVSS: n/a (Medium)
- EPSS: 0.0414
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: May 16, 2018

## Description

The S/MIME specification allows a Cipher Block Chaining (CBC)malleability-gadget attack that can indirectly lead to plaintextexfiltration, aka EFAIL.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | kf5-messagelib-data Ubuntu 18.04.6 LTS (bionic) | 4:17.12.3-0ubuntu3+esm1 | [kf5-messagelib-data 4:17.12.3-0ubuntu3+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-kf5-messagelib-data-4-17.12.3-0ubuntu3-esm1.md) | Apr 7, 2019 |
| Linux | kmail Ubuntu 18.04.6 LTS (bionic) | 4:17.12.3-0ubuntu1+esm1 | [kmail 4:17.12.3-0ubuntu1+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-kmail-4-17.12.3-0ubuntu1-esm1.md) | Apr 17, 2020 |
| Linux | ktnef Ubuntu 18.04.6 LTS (bionic) | 4:17.12.3-0ubuntu1+esm1 | [ktnef 4:17.12.3-0ubuntu1+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-ktnef-4-17.12.3-0ubuntu1-esm1.md) | Apr 17, 2020 |
| Linux | libkf5messagecomposer5abi2 Ubuntu 18.04.6 LTS (bionic) | 4:17.12.3-0ubuntu3+esm1 | [libkf5messagecomposer5abi2 4:17.12.3-0ubuntu3+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libkf5messagecomposer5abi2-4-17.12.3-0ubuntu3-esm1.md) | Apr 7, 2019 |
| Linux | libkf5messagecore5abi2 Ubuntu 18.04.6 LTS (bionic) | 4:17.12.3-0ubuntu3+esm1 | [libkf5messagecore5abi2 4:17.12.3-0ubuntu3+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libkf5messagecore5abi2-4-17.12.3-0ubuntu3-esm1.md) | Apr 7, 2019 |
| Linux | libkf5messagelist5abi1 Ubuntu 18.04.6 LTS (bionic) | 4:17.12.3-0ubuntu3+esm1 | [libkf5messagelist5abi1 4:17.12.3-0ubuntu3+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libkf5messagelist5abi1-4-17.12.3-0ubuntu3-esm1.md) | Apr 7, 2019 |
| Linux | libkf5messageviewer-plugins Ubuntu 18.04.6 LTS (bionic) | 4:17.12.3-0ubuntu3+esm1 | [libkf5messageviewer-plugins 4:17.12.3-0ubuntu3+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libkf5messageviewer-plugins-4-17.12.3-0ubuntu3-esm1.md) | Apr 7, 2019 |
| Linux | libkf5messageviewer5abi4 Ubuntu 18.04.6 LTS (bionic) | 4:17.12.3-0ubuntu3+esm1 | [libkf5messageviewer5abi4 4:17.12.3-0ubuntu3+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libkf5messageviewer5abi4-4-17.12.3-0ubuntu3-esm1.md) | Apr 7, 2019 |
| Linux | libkf5mimetreeparser5abi2 Ubuntu 18.04.6 LTS (bionic) | 4:17.12.3-0ubuntu3+esm1 | [libkf5mimetreeparser5abi2 4:17.12.3-0ubuntu3+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libkf5mimetreeparser5abi2-4-17.12.3-0ubuntu3-esm1.md) | Apr 7, 2019 |
| Linux | libkf5templateparser5abi2 Ubuntu 18.04.6 LTS (bionic) | 4:17.12.3-0ubuntu3+esm1 | [libkf5templateparser5abi2 4:17.12.3-0ubuntu3+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libkf5templateparser5abi2-4-17.12.3-0ubuntu3-esm1.md) | Apr 7, 2019 |
| Linux | libkf5webengineviewer5abi3 Ubuntu 18.04.6 LTS (bionic) | 4:17.12.3-0ubuntu3+esm1 | [libkf5webengineviewer5abi3 4:17.12.3-0ubuntu3+esm1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libkf5webengineviewer5abi3-4-17.12.3-0ubuntu3-esm1.md) | Apr 7, 2019 |
| Linux | thunderbird Ubuntu 18.04.6 LTS (bionic) | 1:52.8.0+build1-0ubuntu0.18.04.1 | [thunderbird 1:52.8.0+build1-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-thunderbird-1-52.8.0-build1-0ubuntu0.18.04.1.md) | May 22, 2018 |
| Linux | thunderbird Ubuntu 24.10 (oracular) | 1:60.2.1+build1-0ubuntu1 | [thunderbird 1:60.2.1+build1-0ubuntu1](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-thunderbird-1-60.2.1-build1-0ubuntu1.md) | Jan 16, 2026 |
| Linux | thunderbird Ubuntu 25.04 (plucky) | 1:60.2.1+build1-0ubuntu1 | [thunderbird 1:60.2.1+build1-0ubuntu1](https://patchblox.com/security/data/fix/linux/ubuntu-plucky-thunderbird-1-60.2.1-build1-0ubuntu1.md) | Jan 16, 2026 |
| Linux | thunderbird-globalmenu Ubuntu 18.04.6 LTS (bionic) | 1:52.8.0+build1-0ubuntu0.18.04.1 | [thunderbird-globalmenu 1:52.8.0+build1-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-thunderbird-globalmenu-1-52.8.0-build1-0ubuntu0.18.04.1.md) | May 22, 2018 |
| Linux | thunderbird-gnome-support Ubuntu 18.04.6 LTS (bionic) | 1:52.8.0+build1-0ubuntu0.18.04.1 | [thunderbird-gnome-support 1:52.8.0+build1-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-thunderbird-gnome-support-1-52.8.0-build1-0ubuntu0.18.04.1.md) | May 22, 2018 |
| Linux | thunderbird-mozsymbols Ubuntu 18.04.6 LTS (bionic) | 1:52.8.0+build1-0ubuntu0.18.04.1 | [thunderbird-mozsymbols 1:52.8.0+build1-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-thunderbird-mozsymbols-1-52.8.0-build1-0ubuntu0.18.04.1.md) | May 22, 2018 |
| Linux | thunderbird-testsuite Ubuntu 18.04.6 LTS (bionic) | 1:52.8.0+build1-0ubuntu0.18.04.1 | [thunderbird-testsuite 1:52.8.0+build1-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-thunderbird-testsuite-1-52.8.0-build1-0ubuntu0.18.04.1.md) | May 22, 2018 |
| Linux | xul-ext-calendar-timezones Ubuntu 18.04.6 LTS (bionic) | 1:52.8.0+build1-0ubuntu0.18.04.1 | [xul-ext-calendar-timezones 1:52.8.0+build1-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-xul-ext-calendar-timezones-1-52.8.0-build1-0ubuntu0.18.04.1.md) | May 22, 2018 |
| Linux | xul-ext-gdata-provider Ubuntu 18.04.6 LTS (bionic) | 1:52.8.0+build1-0ubuntu0.18.04.1 | [xul-ext-gdata-provider 1:52.8.0+build1-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-xul-ext-gdata-provider-1-52.8.0-build1-0ubuntu0.18.04.1.md) | May 22, 2018 |
| Linux | xul-ext-lightning Ubuntu 18.04.6 LTS (bionic) | 1:52.8.0+build1-0ubuntu0.18.04.1 | [xul-ext-lightning 1:52.8.0+build1-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-xul-ext-lightning-1-52.8.0-build1-0ubuntu0.18.04.1.md) | May 22, 2018 |

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