# CVE-2022-34479: firefox: Mozilla Firefox is an open-source web browser, designed for standards compliance, performance, and portability. This... CVE-2022-34479 is fixed in 10 products on 1 platform, first by RHSA-2022:5469, released June 30, 2022. It is not reported as exploited. Patch Radar priority: High. - Web page: https://patchblox.com/security/cve/CVE-2022-34479 - Priority: High - CVSS: 9.8 (Important) - EPSS: 0.0076 - CISA KEV: not listed - Exploited (vendor report): no - Publicly disclosed: no - Published: Jun 30, 2022 ## Description Mozilla Firefox is an open-source web browser, designed for standards compliance, performance, and portability. This update upgrades Firefox to version 91.11 ESR. Security Fix(es): * Mozilla: CSP sandbox header without `allow-scripts` can be bypassed via retargeted javascript: URI (CVE-2022-34468) * Mozilla: Use-after-free in nsSHistory (CVE-2022-34470) * Mozilla: A popup window could be resized in a way to overlay the address bar with web content (CVE-2022-34479) * Mozilla: Memory safety bugs fixed in Firefox 102 and Firefox ESR 91.11 (CVE-2022-34484) * Mozilla: Undesired attributes could be set as part of prototype pollution (CVE-2022-2200) * Mozilla: CSP bypass enabling stylesheet injection (CVE-2022-31744) * Mozilla: Unavailable PAC file resulted in OCSP requests being blocked (CVE-2022-34472) * Mozilla: Potential integer overflow in ReplaceElementsAt (CVE-2022-34481) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section. ## Where it's fixed | Platform | Product | Fixed in | Fix | Released | |---|---|---|---|---| | Linux | firefox RHEL 8 | 0:91.11.0-2.el8_6 | [RHSA-2022:5469](https://patchblox.com/security/data/fix/linux/rhsa-2022-5469.md) | Jun 30, 2022 | | Linux | firefox RHEL 9 | 0:91.11.0-2.el9_0 | [RHSA-2022:5481](https://patchblox.com/security/data/fix/linux/rhsa-2022-5481.md) | Jul 1, 2022 | | Linux | firefox Ubuntu 18.04.6 LTS (bionic) | 102.0+build2-0ubuntu0.18.04.1 | [firefox 102.0+build2-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-firefox-102.0-build2-0ubuntu0.18.04.1.md) | Jul 4, 2022 | | Linux | firefox Ubuntu 20.04 LTS (focal) | 102.0+build2-0ubuntu0.20.04.1 | [firefox 102.0+build2-0ubuntu0.20.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-firefox-102.0-build2-0ubuntu0.20.04.1.md) | Jul 4, 2022 | | Linux | firefox ol 8 | 0:91.11.0-2.0.1.el8_6 | [ELSA-2022-5469](https://patchblox.com/security/data/fix/linux/elsa-2022-5469.md) | Jul 1, 2022 | | Linux | firefox ol 9 | 0:91.11.0-2.0.1.el9_0 | [ELSA-2022-5481](https://patchblox.com/security/data/fix/linux/elsa-2022-5481.md) | Jul 2, 2022 | | Linux | firefox rocky 8 | 0:91.11.0-2.el8_6 | [RLSA-2022:5469](https://patchblox.com/security/data/fix/linux/rlsa-2022-5469.md) | Jun 30, 2022 | | Linux | firefox-esr Debian 12.15 (bookworm) | 91.11.0esr-1 | [DEBIAN-CVE-2022-34479](https://patchblox.com/security/data/fix/linux/debian-cve-2022-34479.md) | Dec 22, 2022 | | Linux | firefox-esr Debian 13.5 (trixie) | 91.11.0esr-1 | [DEBIAN-CVE-2022-34479](https://patchblox.com/security/data/fix/linux/debian-cve-2022-34479.md) | Dec 22, 2022 | | Linux | firefox-esr Debian 14 | 91.11.0esr-1 | [DEBIAN-CVE-2022-34479](https://patchblox.com/security/data/fix/linux/debian-cve-2022-34479.md) | Dec 22, 2022 | | Linux | firefox-geckodriver Ubuntu 18.04.6 LTS (bionic) | 102.0+build2-0ubuntu0.18.04.1 | [firefox-geckodriver 102.0+build2-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-firefox-geckodriver-102.0-build2-0ubuntu0.18.04.1.md) | Jul 4, 2022 | | Linux | firefox-geckodriver Ubuntu 20.04 LTS (focal) | 102.0+build2-0ubuntu0.20.04.1 | [firefox-geckodriver 102.0+build2-0ubuntu0.20.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-firefox-geckodriver-102.0-build2-0ubuntu0.20.04.1.md) | Jul 4, 2022 | | Linux | firefox-mozsymbols Ubuntu 18.04.6 LTS (bionic) | 102.0+build2-0ubuntu0.18.04.1 | [firefox-mozsymbols 102.0+build2-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-firefox-mozsymbols-102.0-build2-0ubuntu0.18.04.1.md) | Jul 4, 2022 | | Linux | firefox-mozsymbols Ubuntu 20.04 LTS (focal) | 102.0+build2-0ubuntu0.20.04.1 | [firefox-mozsymbols 102.0+build2-0ubuntu0.20.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-firefox-mozsymbols-102.0-build2-0ubuntu0.20.04.1.md) | Jul 4, 2022 | | Linux | thunderbird Debian 12.15 (bookworm) | 1:91.11.0-1 | [DEBIAN-CVE-2022-34479](https://patchblox.com/security/data/fix/linux/debian-cve-2022-34479.md) | Dec 22, 2022 | | Linux | thunderbird Debian 13.5 (trixie) | 1:91.11.0-1 | [DEBIAN-CVE-2022-34479](https://patchblox.com/security/data/fix/linux/debian-cve-2022-34479.md) | Dec 22, 2022 | | Linux | thunderbird Debian 14 | 1:91.11.0-1 | [DEBIAN-CVE-2022-34479](https://patchblox.com/security/data/fix/linux/debian-cve-2022-34479.md) | Dec 22, 2022 | | Linux | thunderbird RHEL 8 | 0:91.11.0-2.el8_6 | [RHSA-2022:5470](https://patchblox.com/security/data/fix/linux/rhsa-2022-5470.md) | Jun 30, 2022 | | Linux | thunderbird RHEL 9 | 0:91.11.0-2.el9_0 | [RHSA-2022:5482](https://patchblox.com/security/data/fix/linux/rhsa-2022-5482.md) | Jul 1, 2022 | | Linux | thunderbird Ubuntu 18.04.6 LTS (bionic) | 1:91.11.0+build2-0ubuntu0.18.04.1 | [thunderbird 1:91.11.0+build2-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-thunderbird-1-91.11.0-build2-0ubuntu0.18.04.1.md) | Jul 4, 2022 | | Linux | thunderbird Ubuntu 20.04 LTS (focal) | 1:91.11.0+build2-0ubuntu0.20.04.1 | [thunderbird 1:91.11.0+build2-0ubuntu0.20.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-thunderbird-1-91.11.0-build2-0ubuntu0.20.04.1.md) | Jul 4, 2022 | | Linux | thunderbird Ubuntu 22.04.1 LTS (jammy) | 1:91.11.0+build2-0ubuntu0.22.04.1 | [thunderbird 1:91.11.0+build2-0ubuntu0.22.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-thunderbird-1-91.11.0-build2-0ubuntu0.22.04.1.md) | Jul 4, 2022 | | Linux | thunderbird almalinux 9 | 91.11.0-2.el9_0.alma | [ALSA-2022:5482](https://patchblox.com/security/data/fix/linux/alsa-2022-5482.md) | Jul 1, 2022 | | Linux | thunderbird ol 8 | 0:91.11.0-2.0.1.el8_6 | [ELSA-2022-5470](https://patchblox.com/security/data/fix/linux/elsa-2022-5470.md) | Jul 1, 2022 | | Linux | thunderbird ol 9 | 0:91.11.0-2.0.1.el9_0 | [ELSA-2022-5482](https://patchblox.com/security/data/fix/linux/elsa-2022-5482.md) | Jul 2, 2022 | | Linux | thunderbird rocky 8 | 0:91.11.0-2.el8_6 | [RLSA-2022:5470](https://patchblox.com/security/data/fix/linux/rlsa-2022-5470.md) | Jun 30, 2022 | | Linux | thunderbird-gnome-support Ubuntu 18.04.6 LTS (bionic) | 1:91.11.0+build2-0ubuntu0.18.04.1 | [thunderbird-gnome-support 1:91.11.0+build2-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-thunderbird-gnome-support-1-91.11.0-build2-0ubuntu0.18.04.1.md) | Jul 4, 2022 | | Linux | thunderbird-gnome-support Ubuntu 20.04 LTS (focal) | 1:91.11.0+build2-0ubuntu0.20.04.1 | [thunderbird-gnome-support 1:91.11.0+build2-0ubuntu0.20.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-thunderbird-gnome-support-1-91.11.0-build2-0ubuntu0.20.04.1.md) | Jul 4, 2022 | | Linux | thunderbird-gnome-support Ubuntu 22.04.1 LTS (jammy) | 1:91.11.0+build2-0ubuntu0.22.04.1 | [thunderbird-gnome-support 1:91.11.0+build2-0ubuntu0.22.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-thunderbird-gnome-support-1-91.11.0-build2-0ubuntu0.22.04.1.md) | Jul 4, 2022 | | Linux | thunderbird-mozsymbols Ubuntu 18.04.6 LTS (bionic) | 1:91.11.0+build2-0ubuntu0.18.04.1 | [thunderbird-mozsymbols 1:91.11.0+build2-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-thunderbird-mozsymbols-1-91.11.0-build2-0ubuntu0.18.04.1.md) | Jul 4, 2022 | | Linux | thunderbird-mozsymbols Ubuntu 20.04 LTS (focal) | 1:91.11.0+build2-0ubuntu0.20.04.1 | [thunderbird-mozsymbols 1:91.11.0+build2-0ubuntu0.20.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-thunderbird-mozsymbols-1-91.11.0-build2-0ubuntu0.20.04.1.md) | Jul 4, 2022 | | Linux | thunderbird-mozsymbols Ubuntu 22.04.1 LTS (jammy) | 1:91.11.0+build2-0ubuntu0.22.04.1 | [thunderbird-mozsymbols 1:91.11.0+build2-0ubuntu0.22.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-thunderbird-mozsymbols-1-91.11.0-build2-0ubuntu0.22.04.1.md) | Jul 4, 2022 | | Linux | xul-ext-calendar-timezones Ubuntu 18.04.6 LTS (bionic) | 1:91.11.0+build2-0ubuntu0.18.04.1 | [xul-ext-calendar-timezones 1:91.11.0+build2-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-xul-ext-calendar-timezones-1-91.11.0-build2-0ubuntu0.18.04.1.md) | Jul 4, 2022 | | Linux | xul-ext-calendar-timezones Ubuntu 20.04 LTS (focal) | 1:91.11.0+build2-0ubuntu0.20.04.1 | [xul-ext-calendar-timezones 1:91.11.0+build2-0ubuntu0.20.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-xul-ext-calendar-timezones-1-91.11.0-build2-0ubuntu0.20.04.1.md) | Jul 4, 2022 | | Linux | xul-ext-calendar-timezones Ubuntu 22.04.1 LTS (jammy) | 1:91.11.0+build2-0ubuntu0.22.04.1 | [xul-ext-calendar-timezones 1:91.11.0+build2-0ubuntu0.22.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-xul-ext-calendar-timezones-1-91.11.0-build2-0ubuntu0.22.04.1.md) | Jul 4, 2022 | | Linux | xul-ext-gdata-provider Ubuntu 18.04.6 LTS (bionic) | 1:91.11.0+build2-0ubuntu0.18.04.1 | [xul-ext-gdata-provider 1:91.11.0+build2-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-xul-ext-gdata-provider-1-91.11.0-build2-0ubuntu0.18.04.1.md) | Jul 4, 2022 | | Linux | xul-ext-gdata-provider Ubuntu 20.04 LTS (focal) | 1:91.11.0+build2-0ubuntu0.20.04.1 | [xul-ext-gdata-provider 1:91.11.0+build2-0ubuntu0.20.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-xul-ext-gdata-provider-1-91.11.0-build2-0ubuntu0.20.04.1.md) | Jul 4, 2022 | | Linux | xul-ext-gdata-provider Ubuntu 22.04.1 LTS (jammy) | 1:91.11.0+build2-0ubuntu0.22.04.1 | [xul-ext-gdata-provider 1:91.11.0+build2-0ubuntu0.22.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-xul-ext-gdata-provider-1-91.11.0-build2-0ubuntu0.22.04.1.md) | Jul 4, 2022 | | Linux | xul-ext-lightning Ubuntu 18.04.6 LTS (bionic) | 1:91.11.0+build2-0ubuntu0.18.04.1 | [xul-ext-lightning 1:91.11.0+build2-0ubuntu0.18.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-xul-ext-lightning-1-91.11.0-build2-0ubuntu0.18.04.1.md) | Jul 4, 2022 | | Linux | xul-ext-lightning Ubuntu 20.04 LTS (focal) | 1:91.11.0+build2-0ubuntu0.20.04.1 | [xul-ext-lightning 1:91.11.0+build2-0ubuntu0.20.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-focal-xul-ext-lightning-1-91.11.0-build2-0ubuntu0.20.04.1.md) | Jul 4, 2022 | | Linux | xul-ext-lightning Ubuntu 22.04.1 LTS (jammy) | 1:91.11.0+build2-0ubuntu0.22.04.1 | [xul-ext-lightning 1:91.11.0+build2-0ubuntu0.22.04.1](https://patchblox.com/security/data/fix/linux/ubuntu-jammy-xul-ext-lightning-1-91.11.0-build2-0ubuntu0.22.04.1.md) | Jul 4, 2022 | --- Data as of 2026-11-08T13:06:02Z UTC. 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