# CVE-2019-17005: Firefox ESR: The plain text serializer used a fixed-size array for the number of <ol> elements it could process; however…

CVE-2019-17005 is fixed in 10 products on 2 platforms, first by firefox 71.0+build5-0ubuntu0.18.04.1, released December 3, 2019. It is not reported as exploited. Patch Radar priority: Urgent.

- Web page: https://patchblox.com/security/cve/CVE-2019-17005
- Priority: Urgent
- CVSS: 8.8 (Critical)
- EPSS: 0.0191
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Dec 3, 2019
- Vendor advisory: https://nvd.nist.gov/vuln/detail/CVE-2019-17005

## Description

The plain text serializer used a fixed-size array for the number of <ol> elements it could process; however it was possible to overflow the static-sized array leading to memory corruption and a potentially exploitable crash. This vulnerability affects Thunderbird < 68.3, Firefox ESR < 68.3, and Firefox < 71.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Windows apps | Mozilla Firefox ESR (en-US) | 78.0esr | [Mozilla Firefox ESR (en-US) 78.0esr](https://patchblox.com/security/data/fix/windows-app/mozilla.firefox.esr-78.0esr.md) | Jun 25, 2020 |
| Linux | firefox RHEL 8 | 0:68.3.0-1.el8_1 | [RHSA-2019:4111](https://patchblox.com/security/data/fix/linux/rhsa-2019-4111.md) | Dec 5, 2019 |
| Linux | firefox Ubuntu 18.04.6 LTS (bionic) | 71.0+build5-0ubuntu0.18.04.1 | [firefox 71.0+build5-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-firefox-71.0-build5-0ubuntu0.18.04.1.md) | Dec 3, 2019 |
| Linux | firefox Ubuntu 20.04 LTS (focal) | 71.0+build5-0ubuntu1 | [firefox 71.0+build5-0ubuntu1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-firefox-71.0-build5-0ubuntu1.md) | Dec 3, 2019 |
| Linux | firefox ol 8 | 0:68.3.0-1.0.1.el8_1 | [ELSA-2019-4111](https://patchblox.com/security/data/fix/linux/elsa-2019-4111.md) | Dec 5, 2019 |
| Linux | firefox-geckodriver Ubuntu 18.04.6 LTS (bionic) | 71.0+build5-0ubuntu0.18.04.1 | [firefox-geckodriver 71.0+build5-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-firefox-geckodriver-71.0-build5-0ubuntu0.18.04.1.md) | Dec 3, 2019 |
| Linux | firefox-geckodriver Ubuntu 20.04 LTS (focal) | 71.0+build5-0ubuntu1 | [firefox-geckodriver 71.0+build5-0ubuntu1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-firefox-geckodriver-71.0-build5-0ubuntu1.md) | Dec 3, 2019 |
| Linux | firefox-mozsymbols Ubuntu 18.04.6 LTS (bionic) | 71.0+build5-0ubuntu0.18.04.1 | [firefox-mozsymbols 71.0+build5-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-firefox-mozsymbols-71.0-build5-0ubuntu0.18.04.1.md) | Dec 3, 2019 |
| Linux | firefox-mozsymbols Ubuntu 20.04 LTS (focal) | 71.0+build5-0ubuntu1 | [firefox-mozsymbols 71.0+build5-0ubuntu1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-firefox-mozsymbols-71.0-build5-0ubuntu1.md) | Dec 3, 2019 |
| Linux | thunderbird RHEL 8 | 0:68.3.0-2.el8_1 | [RHSA-2019:4195](https://patchblox.com/security/data/fix/linux/rhsa-2019-4195.md) | Dec 10, 2019 |
| Linux | thunderbird Ubuntu 18.04.6 LTS (bionic) | 1:68.4.1+build1-0ubuntu0.18.04.1 | [thunderbird 1:68.4.1+build1-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-thunderbird-1-68.4.1-build1-0ubuntu0.18.04.1.md) | Jan 8, 2020 |
| Linux | thunderbird Ubuntu 20.04 LTS (focal) | 1:68.3.0+build2-0ubuntu1 | [thunderbird 1:68.3.0+build2-0ubuntu1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-thunderbird-1-68.3.0-build2-0ubuntu1.md) | Dec 3, 2019 |
| Linux | thunderbird ol 8 | 0:68.3.0-2.0.1.el8_1 | [ELSA-2019-4195](https://patchblox.com/security/data/fix/linux/elsa-2019-4195.md) | Dec 11, 2019 |
| Linux | thunderbird-gnome-support Ubuntu 18.04.6 LTS (bionic) | 1:68.4.1+build1-0ubuntu0.18.04.1 | [thunderbird-gnome-support 1:68.4.1+build1-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-thunderbird-gnome-support-1-68.4.1-build1-0ubuntu0.18.04.1.md) | Jan 8, 2020 |
| Linux | thunderbird-gnome-support Ubuntu 20.04 LTS (focal) | 1:68.3.0+build2-0ubuntu1 | [thunderbird-gnome-support 1:68.3.0+build2-0ubuntu1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-thunderbird-gnome-support-1-68.3.0-build2-0ubuntu1.md) | Dec 3, 2019 |
| Linux | thunderbird-mozsymbols Ubuntu 18.04.6 LTS (bionic) | 1:68.4.1+build1-0ubuntu0.18.04.1 | [thunderbird-mozsymbols 1:68.4.1+build1-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-thunderbird-mozsymbols-1-68.4.1-build1-0ubuntu0.18.04.1.md) | Jan 8, 2020 |
| Linux | thunderbird-mozsymbols Ubuntu 20.04 LTS (focal) | 1:68.3.0+build2-0ubuntu1 | [thunderbird-mozsymbols 1:68.3.0+build2-0ubuntu1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-thunderbird-mozsymbols-1-68.3.0-build2-0ubuntu1.md) | Dec 3, 2019 |
| Linux | xul-ext-calendar-timezones Ubuntu 18.04.6 LTS (bionic) | 1:68.4.1+build1-0ubuntu0.18.04.1 | [xul-ext-calendar-timezones 1:68.4.1+build1-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-xul-ext-calendar-timezones-1-68.4.1-build1-0ubuntu0.18.04.1.md) | Jan 8, 2020 |
| Linux | xul-ext-calendar-timezones Ubuntu 20.04 LTS (focal) | 1:68.3.0+build2-0ubuntu1 | [xul-ext-calendar-timezones 1:68.3.0+build2-0ubuntu1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-xul-ext-calendar-timezones-1-68.3.0-build2-0ubuntu1.md) | Dec 3, 2019 |
| Linux | xul-ext-gdata-provider Ubuntu 18.04.6 LTS (bionic) | 1:68.4.1+build1-0ubuntu0.18.04.1 | [xul-ext-gdata-provider 1:68.4.1+build1-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-xul-ext-gdata-provider-1-68.4.1-build1-0ubuntu0.18.04.1.md) | Jan 8, 2020 |
| Linux | xul-ext-gdata-provider Ubuntu 20.04 LTS (focal) | 1:68.3.0+build2-0ubuntu1 | [xul-ext-gdata-provider 1:68.3.0+build2-0ubuntu1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-xul-ext-gdata-provider-1-68.3.0-build2-0ubuntu1.md) | Dec 3, 2019 |
| Linux | xul-ext-lightning Ubuntu 18.04.6 LTS (bionic) | 1:68.4.1+build1-0ubuntu0.18.04.1 | [xul-ext-lightning 1:68.4.1+build1-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-xul-ext-lightning-1-68.4.1-build1-0ubuntu0.18.04.1.md) | Jan 8, 2020 |
| Linux | xul-ext-lightning Ubuntu 20.04 LTS (focal) | 1:68.3.0+build2-0ubuntu1 | [xul-ext-lightning 1:68.3.0+build2-0ubuntu1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-xul-ext-lightning-1-68.3.0-build2-0ubuntu1.md) | Dec 3, 2019 |

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