CVE-2023-4049
MEDIUMCVSS 5.9/10EPSS 0.63%
Last modified
CVE-2023-4049 is a medium-severity vulnerability rated 5.9/10 on the CVSS scale. Race conditions in reference counting code were found through code inspection. These could have resulted in potentially exploitable use-after-free vulnerabilities. EPSS estimates a 0.63% chance of exploitation in the next 30 days.
Description
Race conditions in reference counting code were found through code inspection. These could have resulted in potentially exploitable use-after-free vulnerabilities. This vulnerability affects Firefox < 116, Firefox ESR < 102.14, and Firefox ESR < 115.1.
Metrics
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Mozilla | Firefox | < 116.0 |
| Mozilla | Firefox | >= 102.0, < 102.14 |
| Mozilla | Firefox | >= 115.0, < 115.1 |
| Debian | Debian Linux | 11.0 |
| Debian | Debian Linux | 12.0 |
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=1842658Issue Tracking, Permissions Required
- https://www.debian.org/security/2023/dsa-5464Third Party Advisory
- https://www.debian.org/security/2023/dsa-5469Third Party Advisory
- https://www.mozilla.org/security/advisories/mfsa2023-29/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2023-30/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2023-31/Vendor Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1842658Issue Tracking, Permissions Required
- https://www.debian.org/security/2023/dsa-5464Third Party Advisory
- https://www.debian.org/security/2023/dsa-5469Third Party Advisory
- https://www.mozilla.org/security/advisories/mfsa2023-29/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2023-30/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2023-31/Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2023-4049?
Race conditions in reference counting code were found through code inspection. These could have resulted in potentially exploitable use-after-free vulnerabilities. This vulnerability affects Firefox < 116, Firefox ESR < 102.14, and Firefox ESR < 115.1.
How severe is CVE-2023-4049?
CVE-2023-4049 has a CVSS score of 5.9/10 (MEDIUM severity). The EPSS model estimates a 0.63% probability of exploitation in the next 30 days.
How do I fix CVE-2023-4049?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
Are you affected by CVE-2023-4049?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST