Vulnerability · Published Dec 22, 2022 · Assigned by mozilla
CVE-2022-31739
High 8.8
In plain English
A high-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 0.7% (higher than 54% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
When downloading files on Windows, the % character was not escaped, which could have lead to a download incorrectly being saved to attacker-influenced paths that used variables such as %HOMEPATH% or %APPDATA%.<br>*This bug only affects Firefox for Windows. Other operating systems are unaffected.*. 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-2022-31739 |
| Alpine:v3.21 | firefox | 101.0-r0 | ALPINE-CVE-2022-31739 |
| Alpine:v3.22 | firefox | 101.0-r0 | ALPINE-CVE-2022-31739 |
| Alpine:v3.23 | firefox | 101.0-r0 | ALPINE-CVE-2022-31739 |
| Alpine:v3.20 | firefox-esr | 91.10.0-r0 | ALPINE-CVE-2022-31739 |
| Alpine:v3.21 | firefox-esr | 91.10.0-r0 | ALPINE-CVE-2022-31739 |
| Alpine:v3.22 | firefox-esr | 91.10.0-r0 | ALPINE-CVE-2022-31739 |
| Alpine:v3.23 | firefox-esr | 91.10.0-r0 | ALPINE-CVE-2022-31739 |
| Alpine:v3.21 | librewolf | 101.0-r0 | ALPINE-CVE-2022-31739 |
| Alpine:v3.22 | librewolf | 101.0-r0 | ALPINE-CVE-2022-31739 |
| Alpine:v3.23 | librewolf | 101.0-r0 | ALPINE-CVE-2022-31739 |
| Alpine:v3.24 | librewolf | 101.0-r0 | ALPINE-CVE-2022-31739 |
| Alpine:v3.20 | thunderbird | 91.10.0-r0 | ALPINE-CVE-2022-31739 |
| Alpine:v3.21 | thunderbird | 91.10.0-r0 | ALPINE-CVE-2022-31739 |
| Alpine:v3.22 | thunderbird | 91.10.0-r0 | ALPINE-CVE-2022-31739 |
| Alpine:v3.23 | thunderbird | 91.10.0-r0 | ALPINE-CVE-2022-31739 |
| Ubuntu:22.04:LTS | mozjs78 | no fix listed | UBUNTU-CVE-2022-31739 |
| Ubuntu:22.04:LTS | mozjs91 | no fix listed | UBUNTU-CVE-2022-31739 |
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-73 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H