Vulnerability · Published Dec 22, 2022 · Assigned by mozilla
CVE-2022-1802
High 8.8
In plain English
A high-severity prototype pollution in Firefox from Mozilla. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 28.5% (higher than 98% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code. Fixed versions are available - upgrade the affected package.
Official description
If an attacker was able to corrupt the methods of an Array object in JavaScript via prototype pollution, they could have achieved execution of attacker-controlled JavaScript code in a privileged context. This vulnerability affects Firefox ESR < 91.9.1, Firefox < 100.0.2, Firefox for Android < 100.3.0, and Thunderbird < 91.9.1.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux:8 | firefox | 91.9.1-1.el8_6.alma | ALSA-2022:4776 |
| AlmaLinux:8 | thunderbird | 91.9.1-1.el8_6.alma | ALSA-2022:4769 |
| Alpine:v3.20 | firefox | 100.0.2-r0 | ALPINE-CVE-2022-1802 |
| Alpine:v3.21 | firefox | 100.0.2-r0 | ALPINE-CVE-2022-1802 |
| Alpine:v3.22 | firefox | 100.0.2-r0 | ALPINE-CVE-2022-1802 |
| Alpine:v3.23 | firefox | 100.0.2-r0 | ALPINE-CVE-2022-1802 |
| Alpine:v3.20 | firefox-esr | 91.9.1-r0 | ALPINE-CVE-2022-1802 |
| Alpine:v3.21 | firefox-esr | 91.9.1-r0 | ALPINE-CVE-2022-1802 |
| Alpine:v3.22 | firefox-esr | 91.9.1-r0 | ALPINE-CVE-2022-1802 |
| Alpine:v3.23 | firefox-esr | 91.9.1-r0 | ALPINE-CVE-2022-1802 |
| Alpine:v3.21 | librewolf | 100.0.2-r0 | ALPINE-CVE-2022-1802 |
| Alpine:v3.22 | librewolf | 100.0.2-r0 | ALPINE-CVE-2022-1802 |
| Alpine:v3.23 | librewolf | 100.0.2-r0 | ALPINE-CVE-2022-1802 |
| Alpine:v3.24 | librewolf | 100.0.2-r0 | ALPINE-CVE-2022-1802 |
| Alpine:v3.20 | thunderbird | 91.9.1-r0 | ALPINE-CVE-2022-1802 |
| Alpine:v3.21 | thunderbird | 91.9.1-r0 | ALPINE-CVE-2022-1802 |
| Alpine:v3.22 | thunderbird | 91.9.1-r0 | ALPINE-CVE-2022-1802 |
| Alpine:v3.23 | thunderbird | 91.9.1-r0 | ALPINE-CVE-2022-1802 |
| Debian:12 | firefox-esr | 91.9.1esr-1 | DEBIAN-CVE-2022-1802 |
| Debian:13 | firefox-esr | 91.9.1esr-1 | DEBIAN-CVE-2022-1802 |
| Debian:14 | firefox-esr | 91.9.1esr-1 | DEBIAN-CVE-2022-1802 |
| Debian:12 | thunderbird | 1:91.10.0-1 | DEBIAN-CVE-2022-1802 |
| Debian:13 | thunderbird | 1:91.10.0-1 | DEBIAN-CVE-2022-1802 |
| Debian:14 | thunderbird | 1:91.10.0-1 | DEBIAN-CVE-2022-1802 |
| Rocky Linux:8 | firefox | 0:91.9.1-1.el8_6 | RLSA-2022:4776 |
| Rocky Linux:8 | thunderbird | 0:91.9.1-1.el8_6 | RLSA-2022:4769 |
| Ubuntu:22.04:LTS | thunderbird | 1:91.9.1+build1-0ubuntu0.22.04.1 | UBUNTU-CVE-2022-1802 |
| Ubuntu:22.04:LTS | thunderbird | 1:91.9.1+build1-0ubuntu0.22.04.1 | USN-5435-1 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Mozilla | Firefox ESR | unspecified – before 91.9.1 |
| Mozilla | Firefox | unspecified – before 100.0.2 |
| Mozilla | Firefox for Android | unspecified – before 100.3.0 |
| Mozilla | Thunderbird | unspecified – before 91.9.1 |
Weakness: CWE-1321 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H