Vulnerability · Published Dec 22, 2022 · Assigned by mozilla
CVE-2022-29916
Medium 6.5
In plain English
A medium-severity information exposure in Firefox from Mozilla. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.8% (higher than 55% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)6.5Medium
Exploit odds (30 days)0.8%top 44.6% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux:8 | firefox | 91.9.0-1.el8_5.alma | ALSA-2022:1705 |
| AlmaLinux:8 | thunderbird | 91.9.0-3.el8_5.alma | ALSA-2022:1730 |
| Alpine:v3.20 | firefox | 100.0-r0 | ALPINE-CVE-2022-29916 |
| Alpine:v3.21 | firefox | 100.0-r0 | ALPINE-CVE-2022-29916 |
| Alpine:v3.22 | firefox | 100.0-r0 | ALPINE-CVE-2022-29916 |
| Alpine:v3.23 | firefox | 100.0-r0 | ALPINE-CVE-2022-29916 |
| Alpine:v3.20 | firefox-esr | 91.9.0-r0 | ALPINE-CVE-2022-29916 |
| Alpine:v3.21 | firefox-esr | 91.9.0-r0 | ALPINE-CVE-2022-29916 |
| Alpine:v3.22 | firefox-esr | 91.9.0-r0 | ALPINE-CVE-2022-29916 |
| Alpine:v3.23 | firefox-esr | 91.9.0-r0 | ALPINE-CVE-2022-29916 |
| Alpine:v3.21 | librewolf | 100.0-r0 | ALPINE-CVE-2022-29916 |
| Alpine:v3.22 | librewolf | 100.0-r0 | ALPINE-CVE-2022-29916 |
| Alpine:v3.23 | librewolf | 100.0-r0 | ALPINE-CVE-2022-29916 |
| Alpine:v3.24 | librewolf | 100.0-r0 | ALPINE-CVE-2022-29916 |
| Alpine:v3.20 | thunderbird | 91.9.0-r0 | ALPINE-CVE-2022-29916 |
| Alpine:v3.21 | thunderbird | 91.9.0-r0 | ALPINE-CVE-2022-29916 |
| Alpine:v3.22 | thunderbird | 91.9.0-r0 | ALPINE-CVE-2022-29916 |
| Alpine:v3.23 | thunderbird | 91.9.0-r0 | ALPINE-CVE-2022-29916 |
| Debian:12 | firefox-esr | 91.9.0esr-1 | DEBIAN-CVE-2022-29916 |
| Debian:13 | firefox-esr | 91.9.0esr-1 | DEBIAN-CVE-2022-29916 |
| Debian:14 | firefox-esr | 91.9.0esr-1 | DEBIAN-CVE-2022-29916 |
| Debian:12 | thunderbird | 1:91.9.0-1 | DEBIAN-CVE-2022-29916 |
| Debian:13 | thunderbird | 1:91.9.0-1 | DEBIAN-CVE-2022-29916 |
| Debian:14 | thunderbird | 1:91.9.0-1 | DEBIAN-CVE-2022-29916 |
| Rocky Linux:8 | firefox | 0:91.9.0-1.el8_5 | RLSA-2022:1705 |
| Rocky Linux:8 | thunderbird | 0:91.9.0-3.el8_5 | RLSA-2022:1730 |
| Ubuntu:22.04:LTS | mozjs78 | no fix listed | UBUNTU-CVE-2022-29916 |
| Ubuntu:22.04:LTS | mozjs91 | no fix listed | UBUNTU-CVE-2022-29916 |
| Ubuntu:22.04:LTS | thunderbird | 1:91.9.1+build1-0ubuntu0.22.04.1 | USN-5435-1 |
| Ubuntu:22.04:LTS | thunderbird | 1:91.9.1+build1-0ubuntu0.22.04.1 | UBUNTU-CVE-2022-29916 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Mozilla | Thunderbird | unspecified – before 91.9 |
| Mozilla | Firefox ESR | unspecified – before 91.9 |
| Mozilla | Firefox | unspecified – before 100 |
Weakness: CWE-200 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N