Vulnerability · Published Dec 22, 2022 · Assigned by mozilla
CVE-2022-40962
High 8.8
In plain English
A high-severity out-of-bounds write 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 1.4% (higher than 73% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
Mozilla developers Nika Layzell, Timothy Nikkel, Sebastian Hengst, Andreas Pehrson, and the Mozilla Fuzzing Team reported memory safety bugs present in Firefox 104 and Firefox ESR 102.2. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox ESR < 102.3, Thunderbird < 102.3, and Firefox < 105.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux:8 | firefox | 102.3.0-6.el8_6.alma | ALSA-2022:6702 |
| AlmaLinux:9 | firefox | 102.3.0-6.el9_0.alma | ALSA-2022:6700 |
| AlmaLinux:8 | thunderbird | 102.3.0-3.el8_6.alma | ALSA-2022:6708 |
| AlmaLinux:9 | thunderbird | 102.3.0-3.el9_0.alma | ALSA-2022:6717 |
| Alpine:v3.20 | firefox-esr | 102.3.0-r0 | ALPINE-CVE-2022-40962 |
| Alpine:v3.21 | firefox-esr | 102.3.0-r0 | ALPINE-CVE-2022-40962 |
| Alpine:v3.22 | firefox-esr | 102.3.0-r0 | ALPINE-CVE-2022-40962 |
| Alpine:v3.23 | firefox-esr | 102.3.0-r0 | ALPINE-CVE-2022-40962 |
| Debian:12 | firefox-esr | 102.3.0esr-1 | DEBIAN-CVE-2022-40962 |
| Debian:13 | firefox-esr | 102.3.0esr-1 | DEBIAN-CVE-2022-40962 |
| Debian:14 | firefox-esr | 102.3.0esr-1 | DEBIAN-CVE-2022-40962 |
| Debian:12 | thunderbird | 1:102.3.0-1 | DEBIAN-CVE-2022-40962 |
| Debian:13 | thunderbird | 1:102.3.0-1 | DEBIAN-CVE-2022-40962 |
| Debian:14 | thunderbird | 1:102.3.0-1 | DEBIAN-CVE-2022-40962 |
| Rocky Linux:8 | firefox | 0:102.3.0-6.el8_6 | RLSA-2022:6702 |
| Rocky Linux:8 | thunderbird | 0:102.3.0-3.el8_6 | RLSA-2022:6708 |
| Ubuntu:22.04:LTS | mozjs78 | no fix listed | UBUNTU-CVE-2022-40962 |
| Ubuntu:22.04:LTS | mozjs91 | no fix listed | UBUNTU-CVE-2022-40962 |
| Ubuntu:22.04:LTS | thunderbird | 1:102.4.2+build2-0ubuntu0.22.04.1 | UBUNTU-CVE-2022-40962 |
| Ubuntu:22.04:LTS | thunderbird | 1:102.4.2+build2-0ubuntu0.22.04.1 | USN-5724-1 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Mozilla | Firefox ESR | unspecified – before 102.3 |
| Mozilla | Thunderbird | unspecified – before 102.3 |
| Mozilla | Firefox | unspecified – before 105 |
Weakness: CWE-787 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H