Vulnerability · Published Oct 24, 2023 · Assigned by mozilla
CVE-2023-5723
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 0.7% (higher than 53% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)5.3Medium
Exploit odds (30 days)0.7%top 46.7% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
An attacker with temporary script access to a site could have set a cookie containing invalid characters using `document.cookie` that could have led to unknown errors. This vulnerability affects Firefox < 119.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine:v3.20 | firefox | 119.0-r0 | ALPINE-CVE-2023-5723 |
| Alpine:v3.21 | firefox | 119.0-r0 | ALPINE-CVE-2023-5723 |
| Alpine:v3.22 | firefox | 119.0-r0 | ALPINE-CVE-2023-5723 |
| Alpine:v3.23 | firefox | 119.0-r0 | ALPINE-CVE-2023-5723 |
| Alpine:v3.22 | librewolf | 119.0-r0 | ALPINE-CVE-2023-5723 |
| Alpine:v3.23 | librewolf | 119.0-r0 | ALPINE-CVE-2023-5723 |
| Alpine:v3.24 | librewolf | 119.0-r0 | ALPINE-CVE-2023-5723 |
| Ubuntu:22.04:LTS | mozjs102 | no fix listed | UBUNTU-CVE-2023-5723 |
| Ubuntu:24.04:LTS | mozjs102 | no fix listed | UBUNTU-CVE-2023-5723 |
| Ubuntu:22.04:LTS | mozjs78 | no fix listed | UBUNTU-CVE-2023-5723 |
| Ubuntu:22.04:LTS | mozjs91 | no fix listed | UBUNTU-CVE-2023-5723 |