# CVE-2020-6801: Firefox ESR: Mozilla developers reported memory safety bugs present in Firefox 72.

CVE-2020-6801 is fixed in 4 products on 2 platforms, first by firefox 73.0+build3-0ubuntu0.18.04.1, released February 10, 2020. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2020-6801
- Priority: High
- CVSS: 8.8 (Medium)
- EPSS: 0.0123
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Feb 10, 2020
- Vendor advisory: https://nvd.nist.gov/vuln/detail/CVE-2020-6801

## Description

Mozilla developers reported memory safety bugs present in Firefox 72. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 73.

## 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 Ubuntu 18.04.6 LTS (bionic) | 73.0+build3-0ubuntu0.18.04.1 | [firefox 73.0+build3-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-firefox-73.0-build3-0ubuntu0.18.04.1.md) | Feb 10, 2020 |
| Linux | firefox-geckodriver Ubuntu 18.04.6 LTS (bionic) | 73.0+build3-0ubuntu0.18.04.1 | [firefox-geckodriver 73.0+build3-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-firefox-geckodriver-73.0-build3-0ubuntu0.18.04.1.md) | Feb 10, 2020 |
| Linux | firefox-mozsymbols Ubuntu 18.04.6 LTS (bionic) | 73.0+build3-0ubuntu0.18.04.1 | [firefox-mozsymbols 73.0+build3-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-firefox-mozsymbols-73.0-build3-0ubuntu0.18.04.1.md) | Feb 10, 2020 |

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