# ELSA-2020-2046: thunderbird security update

ELSA-2020-2046, released May 12, 2020, fixes 5 CVEs in thunderbird (version 0:68.8.0-1.0.1.el8_2). None of them is reported as exploited. Patch Radar priority: Urgent.

- Web page: https://patchblox.com/security/fix/linux/elsa-2020-2046
- Platform: Linux
- Released: May 12, 2020
- Priority: Urgent (Closes CVE-2020-6831, rated Critical)
- CVEs: 5, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://linux.oracle.com/errata/ELSA-2020-2046.html

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [thunderbird](https://patchblox.com/security/data/product/linux/thunderbird.md) | ol 8 | 0:68.8.0-1.0.1.el8_2 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2020-6831](https://patchblox.com/security/data/cve/CVE-2020-6831.md) | Urgent | Firefox ESR: A buffer overflow could occur when parsing and validating SCTP chunks in WebRTC. | 9.8 | 0.0580 |  |
| [CVE-2020-12395](https://patchblox.com/security/data/cve/CVE-2020-12395.md) | Urgent | Firefox ESR: Mozilla developers and community members reported memory safety bugs present in Firefox 75 and Firefox… | 9.8 | 0.0260 |  |
| [CVE-2020-12387](https://patchblox.com/security/data/cve/CVE-2020-12387.md) | Urgent | Firefox ESR: A race condition when running shutdown code for Web Worker led to a use-after-free vulnerability. | 8.8 | 0.0144 |  |
| [CVE-2020-12397](https://patchblox.com/security/data/cve/CVE-2020-12397.md) | Urgent | thunderbird: Mozilla Thunderbird is a standalone mail and newsgroup client.  This update upgrades Thunderbird to version 68.8.0.... | 4.3 | 0.0061 |  |
| [CVE-2020-12392](https://patchblox.com/security/data/cve/CVE-2020-12392.md) | Urgent | Firefox ESR: The 'Copy as cURL' feature of Devtools' network tab did not properly escape the HTTP POST data of a request,… | 6.1 | 0.0035 |  |

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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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo