# RHSA-2019:3196: firefox security update

RHSA-2019:3196, released October 24, 2019, fixes 9 CVEs in firefox (version 0:68.2.0-2.el8_0). None of them is reported as exploited. Patch Radar priority: Urgent.

- Web page: https://patchblox.com/security/fix/linux/rhsa-2019-3196
- Platform: Linux
- Released: Oct 24, 2019
- Priority: Urgent (Closes CVE-2019-11759, rated Critical)
- CVEs: 9, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://access.redhat.com/errata/RHSA-2019:3196

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [firefox](https://patchblox.com/security/data/product/linux/firefox.md) | RHEL 8 | 0:68.2.0-2.el8_0 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2019-11759](https://patchblox.com/security/data/cve/CVE-2019-11759.md) | Urgent | Firefox ESR: An attacker could have caused 4 bytes of HMAC output to be written past the end of a buffer stored on… | 8.8 | 0.0165 |  |
| [CVE-2019-11764](https://patchblox.com/security/data/cve/CVE-2019-11764.md) | Urgent | Firefox ESR: Mozilla developers and community members reported memory safety bugs present in Firefox 69 and Firefox… | 8.8 | 0.0147 |  |
| [CVE-2019-11760](https://patchblox.com/security/data/cve/CVE-2019-11760.md) | Urgent | Firefox ESR: A fixed-size stack buffer could overflow in nrappkit when doing WebRTC signaling. | 8.8 | 0.0137 |  |
| [CVE-2019-11757](https://patchblox.com/security/data/cve/CVE-2019-11757.md) | Urgent | Firefox ESR: When following the value's prototype chain, it was possible to retain a reference to a locale, delete… | 8.8 | 0.0133 |  |
| [CVE-2019-11758](https://patchblox.com/security/data/cve/CVE-2019-11758.md) | Urgent | Firefox ESR: Mozilla community member Philipp reported a memory safety bug present in Firefox 68 when 360 Total Security… | 8.8 | 0.0133 |  |
| [CVE-2019-11763](https://patchblox.com/security/data/cve/CVE-2019-11763.md) | Urgent | Firefox ESR: Failure to correctly handle null bytes when processing HTML entities resulted in Firefox incorrectly… | 6.1 | 0.0115 |  |
| [CVE-2019-11761](https://patchblox.com/security/data/cve/CVE-2019-11761.md) | Urgent | Firefox ESR: By using a form with a data URI it was possible to gain access to the privileged JSONView object that… | 5.4 | 0.0079 |  |
| [CVE-2019-11762](https://patchblox.com/security/data/cve/CVE-2019-11762.md) | Urgent | Firefox ESR: If two same-origin documents set document.domain differently to become cross-origin, it was possible… | 6.1 | 0.0061 |  |
| [CVE-2019-15903](https://patchblox.com/security/data/cve/CVE-2019-15903.md) | High | Python 3.6 and 2 others: Out-of-bounds Read | 7.5 | 0.0664 |  |

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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