Vulnerability · Published Oct 24, 2023 · Assigned by mozilla
CVE-2023-5722
Medium 5.3
In plain English
A medium-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 0.6% (higher than 51% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)5.3Medium
Exploit odds (30 days)0.6%top 48.9% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Using iterative requests an attacker was able to learn the size of an opaque response, as well as the contents of a server-supplied Vary header. This vulnerability affects Firefox < 119.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine:v3.20 | firefox | 119.0-r0 | ALPINE-CVE-2023-5722 |
| Alpine:v3.21 | firefox | 119.0-r0 | ALPINE-CVE-2023-5722 |
| Alpine:v3.22 | firefox | 119.0-r0 | ALPINE-CVE-2023-5722 |
| Alpine:v3.23 | firefox | 119.0-r0 | ALPINE-CVE-2023-5722 |
| Alpine:v3.22 | librewolf | 119.0-r0 | ALPINE-CVE-2023-5722 |
| Alpine:v3.23 | librewolf | 119.0-r0 | ALPINE-CVE-2023-5722 |
| Alpine:v3.24 | librewolf | 119.0-r0 | ALPINE-CVE-2023-5722 |
| Ubuntu:22.04:LTS | mozjs102 | no fix listed | UBUNTU-CVE-2023-5722 |
| Ubuntu:24.04:LTS | mozjs102 | no fix listed | UBUNTU-CVE-2023-5722 |
| Ubuntu:22.04:LTS | mozjs78 | no fix listed | UBUNTU-CVE-2023-5722 |
| Ubuntu:22.04:LTS | mozjs91 | no fix listed | UBUNTU-CVE-2023-5722 |