Vulnerability Description
Memory safety bugs present in Firefox 115, Firefox ESR 115.0, Firefox ESR 102.13, Thunderbird 115.0, and Thunderbird 102.13. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability affects Firefox < 116, Firefox ESR < 102.14, and Firefox ESR < 115.1.
CVSS Score
CRITICAL
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Mozilla | Firefox | < 116.0 |
| Debian | Debian Linux | 10.0 |
Related Weaknesses (CWE)
References
- https://bugzilla.mozilla.org/buglist.cgi?bug_id=1820587%2C1824634%2C1839235%2C18Broken LinkIssue Tracking
- https://lists.debian.org/debian-lts-announce/2023/08/msg00008.htmlMailing ListThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2023/08/msg00010.htmlMailing ListThird Party Advisory
- https://www.debian.org/security/2023/dsa-5464Mailing ListThird Party Advisory
- https://www.debian.org/security/2023/dsa-5469Mailing ListThird 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/buglist.cgi?bug_id=1820587%2C1824634%2C1839235%2C18Broken LinkIssue Tracking
- https://lists.debian.org/debian-lts-announce/2023/08/msg00008.htmlMailing ListThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2023/08/msg00010.htmlMailing ListThird Party Advisory
- https://www.debian.org/security/2023/dsa-5464Mailing ListThird Party Advisory
- https://www.debian.org/security/2023/dsa-5469Mailing ListThird Party Advisory
- https://www.mozilla.org/security/advisories/mfsa2023-29/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2023-30/Vendor Advisory
FAQ
What is CVE-2023-4056?
CVE-2023-4056 is a vulnerability with a CVSS score of 9.8 (CRITICAL). Memory safety bugs present in Firefox 115, Firefox ESR 115.0, Firefox ESR 102.13, Thunderbird 115.0, and Thunderbird 102.13. Some of these bugs showed evidence of memory corruption and we presume that...
How severe is CVE-2023-4056?
CVE-2023-4056 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2023-4056?
Check the references section above for vendor advisories and patch information. Affected products include: Mozilla Firefox, Debian Debian Linux.