Vulnerability · Published Dec 22, 2022 · Assigned by mozilla
CVE-2022-31742
Medium 6.5
In plain English
A medium-severity security flaw 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 51% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
An attacker could have exploited a timing attack by sending a large number of allowCredential entries and detecting the difference between invalid key handles and cross-origin key handles. This could have led to cross-origin account linking in violation of WebAuthn goals. 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-2022-31742 |
| Alpine:v3.21 | firefox | 101.0-r0 | ALPINE-CVE-2022-31742 |
| Alpine:v3.22 | firefox | 101.0-r0 | ALPINE-CVE-2022-31742 |
| Alpine:v3.23 | firefox | 101.0-r0 | ALPINE-CVE-2022-31742 |
| Alpine:v3.20 | firefox-esr | 91.10.0-r0 | ALPINE-CVE-2022-31742 |
| Alpine:v3.21 | firefox-esr | 91.10.0-r0 | ALPINE-CVE-2022-31742 |
| Alpine:v3.22 | firefox-esr | 91.10.0-r0 | ALPINE-CVE-2022-31742 |
| Alpine:v3.23 | firefox-esr | 91.10.0-r0 | ALPINE-CVE-2022-31742 |
| Alpine:v3.21 | librewolf | 101.0-r0 | ALPINE-CVE-2022-31742 |
| Alpine:v3.22 | librewolf | 101.0-r0 | ALPINE-CVE-2022-31742 |
| Alpine:v3.23 | librewolf | 101.0-r0 | ALPINE-CVE-2022-31742 |
| Alpine:v3.24 | librewolf | 101.0-r0 | ALPINE-CVE-2022-31742 |
| Alpine:v3.20 | thunderbird | 91.10.0-r0 | ALPINE-CVE-2022-31742 |
| Alpine:v3.21 | thunderbird | 91.10.0-r0 | ALPINE-CVE-2022-31742 |
| Alpine:v3.22 | thunderbird | 91.10.0-r0 | ALPINE-CVE-2022-31742 |
| Alpine:v3.23 | thunderbird | 91.10.0-r0 | ALPINE-CVE-2022-31742 |
| Debian:12 | firefox-esr | 91.10.0esr-1 | DEBIAN-CVE-2022-31742 |
| Debian:13 | firefox-esr | 91.10.0esr-1 | DEBIAN-CVE-2022-31742 |
| Debian:14 | firefox-esr | 91.10.0esr-1 | DEBIAN-CVE-2022-31742 |
| Debian:12 | thunderbird | 1:91.10.0-1 | DEBIAN-CVE-2022-31742 |
| Debian:13 | thunderbird | 1:91.10.0-1 | DEBIAN-CVE-2022-31742 |
| Debian:14 | thunderbird | 1:91.10.0-1 | DEBIAN-CVE-2022-31742 |
| 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-2022-31742 |
| Ubuntu:22.04:LTS | mozjs91 | no fix listed | UBUNTU-CVE-2022-31742 |
| 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-2022-31742 |
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-203 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N