Vulnerability · Published Dec 22, 2022 · Assigned by mozilla
CVE-2022-31736
Critical 9.8
In plain English
A critical-severity security flaw 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 1.1% (higher than 66% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)9.8Critical
Exploit odds (30 days)1.1%top 34.0% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
A malicious website could have learned the size of a cross-origin resource that supported Range requests. This vulnerability affects Thunderbird < 91.10, Firefox < 101, and Firefox ESR < 91.10.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine:v3.20 | firefox | 101.0-r0 | ALPINE-CVE-2022-31736 |
| Alpine:v3.21 | firefox | 101.0-r0 | ALPINE-CVE-2022-31736 |
| Alpine:v3.22 | firefox | 101.0-r0 | ALPINE-CVE-2022-31736 |
| Alpine:v3.23 | firefox | 101.0-r0 | ALPINE-CVE-2022-31736 |
| Alpine:v3.20 | firefox-esr | 91.10.0-r0 | ALPINE-CVE-2022-31736 |
| Alpine:v3.21 | firefox-esr | 91.10.0-r0 | ALPINE-CVE-2022-31736 |
| Alpine:v3.22 | firefox-esr | 91.10.0-r0 | ALPINE-CVE-2022-31736 |
| Alpine:v3.23 | firefox-esr | 91.10.0-r0 | ALPINE-CVE-2022-31736 |
| Alpine:v3.21 | librewolf | 101.0-r0 | ALPINE-CVE-2022-31736 |
| Alpine:v3.22 | librewolf | 101.0-r0 | ALPINE-CVE-2022-31736 |
| Alpine:v3.23 | librewolf | 101.0-r0 | ALPINE-CVE-2022-31736 |
| Alpine:v3.24 | librewolf | 101.0-r0 | ALPINE-CVE-2022-31736 |
| Alpine:v3.20 | thunderbird | 91.10.0-r0 | ALPINE-CVE-2022-31736 |
| Alpine:v3.21 | thunderbird | 91.10.0-r0 | ALPINE-CVE-2022-31736 |
| Alpine:v3.22 | thunderbird | 91.10.0-r0 | ALPINE-CVE-2022-31736 |
| Alpine:v3.23 | thunderbird | 91.10.0-r0 | ALPINE-CVE-2022-31736 |
| Debian:12 | firefox-esr | 91.10.0esr-1 | DEBIAN-CVE-2022-31736 |
| Debian:13 | firefox-esr | 91.10.0esr-1 | DEBIAN-CVE-2022-31736 |
| Debian:14 | firefox-esr | 91.10.0esr-1 | DEBIAN-CVE-2022-31736 |
| Debian:12 | thunderbird | 1:91.10.0-1 | DEBIAN-CVE-2022-31736 |
| Debian:13 | thunderbird | 1:91.10.0-1 | DEBIAN-CVE-2022-31736 |
| Debian:14 | thunderbird | 1:91.10.0-1 | DEBIAN-CVE-2022-31736 |
| Rocky Linux:8 | firefox | 0:91.10.0-1.el8_6 | RLSA-2022:4872 |
| Rocky Linux:8 | thunderbird | 0:91.10.0-1.el8_6 | RLSA-2022:4887 |
| Ubuntu:22.04:LTS | mozjs78 | no fix listed | UBUNTU-CVE-2022-31736 |
| Ubuntu:22.04:LTS | mozjs91 | no fix listed | UBUNTU-CVE-2022-31736 |
| Ubuntu:22.04:LTS | thunderbird | 1:91.11.0+build2-0ubuntu0.22.04.1 | USN-5512-1 |
| Ubuntu:22.04:LTS | thunderbird | 1:91.11.0+build2-0ubuntu0.22.04.1 | UBUNTU-CVE-2022-31736 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Mozilla | Thunderbird | unspecified – before 91.10 |
| Mozilla | Firefox | unspecified – before 101 |
| Mozilla | Firefox ESR | unspecified – before 91.10 |
Weakness: CWE-942 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H