# RHSA-2019:4195: thunderbird security update

RHSA-2019:4195, released December 10, 2019, fixes 5 CVEs in thunderbird (version 0:68.3.0-2.el8_1). None of them is reported as exploited. Patch Radar priority: Urgent.

- Web page: https://patchblox.com/security/fix/linux/rhsa-2019-4195
- Platform: Linux
- Released: Dec 10, 2019
- Priority: Urgent (Closes CVE-2019-17012, rated Critical)
- CVEs: 5, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://access.redhat.com/errata/RHSA-2019:4195

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [thunderbird](https://patchblox.com/security/data/product/linux/thunderbird.md) | RHEL 8 | 0:68.3.0-2.el8_1 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2019-17012](https://patchblox.com/security/data/cve/CVE-2019-17012.md) | Urgent | Firefox ESR: Mozilla developers reported memory safety bugs present in Firefox 70 and Firefox ESR 68.2. | 8.8 | 0.0197 |  |
| [CVE-2019-17005](https://patchblox.com/security/data/cve/CVE-2019-17005.md) | Urgent | Firefox ESR: The plain text serializer used a fixed-size array for the number of <ol> elements it could process; however… | 8.8 | 0.0191 |  |
| [CVE-2019-17008](https://patchblox.com/security/data/cve/CVE-2019-17008.md) | Urgent | Firefox ESR: When using nested workers, a use-after-free could occur during worker destruction. | 8.8 | 0.0188 |  |
| [CVE-2019-17010](https://patchblox.com/security/data/cve/CVE-2019-17010.md) | Urgent | Firefox ESR: Under certain conditions, when checking the Resist Fingerprinting preference during device orientation… | 7.5 | 0.0152 |  |
| [CVE-2019-17011](https://patchblox.com/security/data/cve/CVE-2019-17011.md) | Urgent | Firefox ESR: Under certain conditions, when retrieving a document from a DocShell in the antitracking code, a race… | 7.5 | 0.0152 |  |

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Data as of 2026-11-07T06:34:28Z 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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo