Vulnerability · Published Dec 22, 2022 · Assigned by mozilla
CVE-2022-31738
Medium 6.5
In plain English
A medium-severity authentication bypass by spoofing in Firefox from Mozilla. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 50% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)6.5Medium
Exploit odds (30 days)0.6%top 49.9% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
When exiting fullscreen mode, an iframe could have confused the browser about the current state of fullscreen, resulting in potential user confusion or spoofing attacks. 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-2022-31738 |
| Alpine:v3.21 | firefox | 101.0-r0 | ALPINE-CVE-2022-31738 |
| Alpine:v3.22 | firefox | 101.0-r0 | ALPINE-CVE-2022-31738 |
| Alpine:v3.23 | firefox | 101.0-r0 | ALPINE-CVE-2022-31738 |
| Alpine:v3.20 | firefox-esr | 91.10.0-r0 | ALPINE-CVE-2022-31738 |
| Alpine:v3.21 | firefox-esr | 91.10.0-r0 | ALPINE-CVE-2022-31738 |
| Alpine:v3.22 | firefox-esr | 91.10.0-r0 | ALPINE-CVE-2022-31738 |
| Alpine:v3.23 | firefox-esr | 91.10.0-r0 | ALPINE-CVE-2022-31738 |
| Alpine:v3.21 | librewolf | 101.0-r0 | ALPINE-CVE-2022-31738 |
| Alpine:v3.22 | librewolf | 101.0-r0 | ALPINE-CVE-2022-31738 |
| Alpine:v3.23 | librewolf | 101.0-r0 | ALPINE-CVE-2022-31738 |
| Alpine:v3.24 | librewolf | 101.0-r0 | ALPINE-CVE-2022-31738 |
| Alpine:v3.20 | thunderbird | 91.10.0-r0 | ALPINE-CVE-2022-31738 |
| Alpine:v3.21 | thunderbird | 91.10.0-r0 | ALPINE-CVE-2022-31738 |
| Alpine:v3.22 | thunderbird | 91.10.0-r0 | ALPINE-CVE-2022-31738 |
| Alpine:v3.23 | thunderbird | 91.10.0-r0 | ALPINE-CVE-2022-31738 |
| Debian:12 | firefox-esr | 91.10.0esr-1 | DEBIAN-CVE-2022-31738 |
| Debian:13 | firefox-esr | 91.10.0esr-1 | DEBIAN-CVE-2022-31738 |
| Debian:14 | firefox-esr | 91.10.0esr-1 | DEBIAN-CVE-2022-31738 |
| Debian:12 | thunderbird | 1:91.10.0-1 | DEBIAN-CVE-2022-31738 |
| Debian:13 | thunderbird | 1:91.10.0-1 | DEBIAN-CVE-2022-31738 |
| Debian:14 | thunderbird | 1:91.10.0-1 | DEBIAN-CVE-2022-31738 |
| 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-2022-31738 |
| Ubuntu:22.04:LTS | mozjs91 | no fix listed | UBUNTU-CVE-2022-31738 |
| 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-2022-31738 |
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-290 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N