CVE-2022-29916
Mozilla Thunderbird and 4 others: Exposure of Sensitive Information to an Unauthorized Actor
CVE-2022-29916 is fixed in 13 products on 2 platforms, first by Mozilla Thunderbird (en-US) 91.9.0, released May 2, 2022. It is not reported as exploited. Patch Radar priority: High.
HighFixed on 2 platforms
CVSS
9.8
Important
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0076
55th percentile
Firefox behaved slightly differently for already known resources when loading CSS resources involving CSS variables. This could have been used to probe the browser history. This vulnerability affects Thunderbird < 91.9, Firefox ESR < 91.9, and Firefox < 100.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Windows apps | |||
| Mozilla Firefox (en-US) | 100.0.1 | Mozilla Firefox (en-US) 100.0.1 | May 19, 2022 |
| Mozilla Firefox ESR (en-US) | 102.0 | Mozilla Firefox ESR (en-US) 102.0 | Jun 23, 2022 |
| Mozilla Thunderbird (en-US) | 91.9.0 | Mozilla Thunderbird (en-US) 91.9.0 | May 2, 2022 |
| Linux | |||
| firefox · RHEL 8 | 0:91.9.0-1.el8_5 | RHSA-2022:1705 | May 4, 2022 |
| firefox · RHEL 9 | 0:91.9.0-1.el9_0 | RHSA-2022:4590 | May 18, 2022 |
| firefox · Ubuntu 18.04.6 LTS (bionic) | 100.0+build2-0ubuntu0.18.04.1 | firefox 100.0+build2-0ubuntu0.18.04.1 | May 6, 2022 |
| firefox · Ubuntu 20.04 LTS (focal) | 100.0+build2-0ubuntu0.20.04.1 | firefox 100.0+build2-0ubuntu0.20.04.1 | May 6, 2022 |
| firefox · almalinux 8 | 91.9.0-1.el8_5.alma | ALSA-2022:1705 | May 4, 2022 |
| firefox · ol 8 | 0:91.9.0-1.0.1.el8_5 | ELSA-2022-1705 | May 4, 2022 |
| firefox · ol 9 | 0:91.9.0-1.0.1.el9_0 | ELSA-2022-4590 | Jun 30, 2022 |
| firefox · rocky 8 | 0:91.9.0-1.el8_5 | RLSA-2022:1705 | May 4, 2022 |
| firefox-esr · Debian 12.15 (bookworm) | 91.9.0esr-1 | DEBIAN-CVE-2022-29916 | Dec 22, 2022 |
| firefox-esr · Debian 13.5 (trixie) | 91.9.0esr-1 | DEBIAN-CVE-2022-29916 | Dec 22, 2022 |
| firefox-esr · Debian 14 | 91.9.0esr-1 | DEBIAN-CVE-2022-29916 | Dec 22, 2022 |
| firefox-geckodriver · Ubuntu 18.04.6 LTS (bionic) | 100.0+build2-0ubuntu0.18.04.1 | firefox-geckodriver 100.0+build2-0ubuntu0.18.04.1 | May 6, 2022 |
| firefox-geckodriver · Ubuntu 20.04 LTS (focal) | 100.0+build2-0ubuntu0.20.04.1 | firefox-geckodriver 100.0+build2-0ubuntu0.20.04.1 | May 6, 2022 |
| firefox-mozsymbols · Ubuntu 18.04.6 LTS (bionic) | 100.0+build2-0ubuntu0.18.04.1 | firefox-mozsymbols 100.0+build2-0ubuntu0.18.04.1 | May 6, 2022 |
| firefox-mozsymbols · Ubuntu 20.04 LTS (focal) | 100.0+build2-0ubuntu0.20.04.1 | firefox-mozsymbols 100.0+build2-0ubuntu0.20.04.1 | May 6, 2022 |
| thunderbird · Debian 12.15 (bookworm) | 1:91.9.0-1 | DEBIAN-CVE-2022-29916 | Dec 22, 2022 |
| thunderbird · Debian 13.5 (trixie) | 1:91.9.0-1 | DEBIAN-CVE-2022-29916 | Dec 22, 2022 |
| thunderbird · Debian 14 | 1:91.9.0-1 | DEBIAN-CVE-2022-29916 | Dec 22, 2022 |
| thunderbird · RHEL 8 | 0:91.9.0-3.el8_5 | RHSA-2022:1730 | May 5, 2022 |
| thunderbird · RHEL 9 | 0:91.9.0-3.el9_0 | RHSA-2022:4589 | May 18, 2022 |
| thunderbird · Ubuntu 18.04.6 LTS (bionic) | 1:91.9.1+build1-0ubuntu0.18.04.1 | thunderbird 1:91.9.1+build1-0ubuntu0.18.04.1 | May 22, 2022 |
| thunderbird · Ubuntu 20.04 LTS (focal) | 1:91.9.1+build1-0ubuntu0.20.04.1 | thunderbird 1:91.9.1+build1-0ubuntu0.20.04.1 | May 22, 2022 |
| thunderbird · Ubuntu 22.04.1 LTS (jammy) | 1:91.9.1+build1-0ubuntu0.22.04.1 | thunderbird 1:91.9.1+build1-0ubuntu0.22.04.1 | May 22, 2022 |
| thunderbird · almalinux 8 | 91.9.0-3.el8_5.alma | ALSA-2022:1730 | May 5, 2022 |
| thunderbird · ol 8 | 0:91.9.0-3.0.1.el8_5 | ELSA-2022-1730 | May 5, 2022 |
| thunderbird · ol 9 | 0:91.9.0-3.0.1.el9_0 | ELSA-2022-4589 | Jun 30, 2022 |
| thunderbird · rocky 8 | 0:91.9.0-3.el8_5 | RLSA-2022:1730 | May 5, 2022 |
| thunderbird-gnome-support · Ubuntu 18.04.6 LTS (bionic) | 1:91.9.1+build1-0ubuntu0.18.04.1 | thunderbird-gnome-support 1:91.9.1+build1-0ubuntu0.18.04.1 | May 22, 2022 |
| thunderbird-gnome-support · Ubuntu 20.04 LTS (focal) | 1:91.9.1+build1-0ubuntu0.20.04.1 | thunderbird-gnome-support 1:91.9.1+build1-0ubuntu0.20.04.1 | May 22, 2022 |
| thunderbird-gnome-support · Ubuntu 22.04.1 LTS (jammy) | 1:91.9.1+build1-0ubuntu0.22.04.1 | thunderbird-gnome-support 1:91.9.1+build1-0ubuntu0.22.04.1 | May 22, 2022 |
| thunderbird-mozsymbols · Ubuntu 18.04.6 LTS (bionic) | 1:91.9.1+build1-0ubuntu0.18.04.1 | thunderbird-mozsymbols 1:91.9.1+build1-0ubuntu0.18.04.1 | May 22, 2022 |
| thunderbird-mozsymbols · Ubuntu 20.04 LTS (focal) | 1:91.9.1+build1-0ubuntu0.20.04.1 | thunderbird-mozsymbols 1:91.9.1+build1-0ubuntu0.20.04.1 | May 22, 2022 |
| thunderbird-mozsymbols · Ubuntu 22.04.1 LTS (jammy) | 1:91.9.1+build1-0ubuntu0.22.04.1 | thunderbird-mozsymbols 1:91.9.1+build1-0ubuntu0.22.04.1 | May 22, 2022 |
| xul-ext-calendar-timezones · Ubuntu 18.04.6 LTS (bionic) | 1:91.9.1+build1-0ubuntu0.18.04.1 | xul-ext-calendar-timezones 1:91.9.1+build1-0ubuntu0.18.04.1 | May 22, 2022 |
| xul-ext-calendar-timezones · Ubuntu 20.04 LTS (focal) | 1:91.9.1+build1-0ubuntu0.20.04.1 | xul-ext-calendar-timezones 1:91.9.1+build1-0ubuntu0.20.04.1 | May 22, 2022 |
| xul-ext-calendar-timezones · Ubuntu 22.04.1 LTS (jammy) | 1:91.9.1+build1-0ubuntu0.22.04.1 | xul-ext-calendar-timezones 1:91.9.1+build1-0ubuntu0.22.04.1 | May 22, 2022 |
| xul-ext-gdata-provider · Ubuntu 18.04.6 LTS (bionic) | 1:91.9.1+build1-0ubuntu0.18.04.1 | xul-ext-gdata-provider 1:91.9.1+build1-0ubuntu0.18.04.1 | May 22, 2022 |
| xul-ext-gdata-provider · Ubuntu 20.04 LTS (focal) | 1:91.9.1+build1-0ubuntu0.20.04.1 | xul-ext-gdata-provider 1:91.9.1+build1-0ubuntu0.20.04.1 | May 22, 2022 |
| xul-ext-gdata-provider · Ubuntu 22.04.1 LTS (jammy) | 1:91.9.1+build1-0ubuntu0.22.04.1 | xul-ext-gdata-provider 1:91.9.1+build1-0ubuntu0.22.04.1 | May 22, 2022 |
| xul-ext-lightning · Ubuntu 18.04.6 LTS (bionic) | 1:91.9.1+build1-0ubuntu0.18.04.1 | xul-ext-lightning 1:91.9.1+build1-0ubuntu0.18.04.1 | May 22, 2022 |
| xul-ext-lightning · Ubuntu 20.04 LTS (focal) | 1:91.9.1+build1-0ubuntu0.20.04.1 | xul-ext-lightning 1:91.9.1+build1-0ubuntu0.20.04.1 | May 22, 2022 |
| xul-ext-lightning · Ubuntu 22.04.1 LTS (jammy) | 1:91.9.1+build1-0ubuntu0.22.04.1 | xul-ext-lightning 1:91.9.1+build1-0ubuntu0.22.04.1 | May 22, 2022 |
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