Vulnerability · Published Dec 22, 2022 · Assigned by mozilla
CVE-2022-34477
High 7.5
In plain English
A high-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 47% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)7.5High
Exploit odds (30 days)0.6%top 52.5% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
The MediaError message property should be consistent to avoid leaking information about cross-origin resources; however for a same-site cross-origin resource, the message could have leaked information enabling XS-Leaks attacks. This vulnerability affects Firefox < 102.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine:v3.20 | firefox | 102.0-r0 | ALPINE-CVE-2022-34477 |
| Alpine:v3.21 | firefox | 102.0-r0 | ALPINE-CVE-2022-34477 |
| Alpine:v3.22 | firefox | 102.0-r0 | ALPINE-CVE-2022-34477 |
| Alpine:v3.23 | firefox | 102.0-r0 | ALPINE-CVE-2022-34477 |
| Alpine:v3.21 | librewolf | 102.0-r0 | ALPINE-CVE-2022-34477 |
| Alpine:v3.22 | librewolf | 102.0-r0 | ALPINE-CVE-2022-34477 |
| Alpine:v3.23 | librewolf | 102.0-r0 | ALPINE-CVE-2022-34477 |
| Alpine:v3.24 | librewolf | 102.0-r0 | ALPINE-CVE-2022-34477 |
Affected products (as reported)
Weakness: CWE-203 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N