Vulnerability Description
Mozilla Developer Iain Ireland discovered a missing type check during unboxed objects removal, resulting in a crash. We presume that with enough effort that it could be exploited to run arbitrary code. This vulnerability affects Thunderbird < 68.9.0, Firefox < 77, and Firefox ESR < 68.9.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Mozilla | Firefox | < 77.0 |
| Mozilla | Firefox Esr | < 68.9.0 |
| Mozilla | Thunderbird | < 68.9.0 |
| Canonical | Ubuntu Linux | 16.04 |
Related Weaknesses (CWE)
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=1639590Issue TrackingVendor Advisory
- https://usn.ubuntu.com/4421-1/Third Party Advisory
- https://www.mozilla.org/security/advisories/mfsa2020-20/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2020-21/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2020-22/Vendor Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1639590Issue TrackingVendor Advisory
- https://usn.ubuntu.com/4421-1/Third Party Advisory
- https://www.mozilla.org/security/advisories/mfsa2020-20/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2020-21/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2020-22/Vendor Advisory
FAQ
What is CVE-2020-12406?
CVE-2020-12406 is a vulnerability with a CVSS score of 8.8 (HIGH). Mozilla Developer Iain Ireland discovered a missing type check during unboxed objects removal, resulting in a crash. We presume that with enough effort that it could be exploited to run arbitrary code...
How severe is CVE-2020-12406?
CVE-2020-12406 has been rated HIGH with a CVSS base score of 8.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2020-12406?
Check the references section above for vendor advisories and patch information. Affected products include: Mozilla Firefox, Mozilla Firefox Esr, Mozilla Thunderbird, Canonical Ubuntu Linux.