Vulnerability Description
Incorrect handling of __proto__ mutations may lead to type confusion in IonMonkey JIT code and can be leveraged for arbitrary memory read and write. This vulnerability affects Firefox < 66.0.1, Firefox ESR < 60.6.1, and Thunderbird < 60.6.1.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Mozilla | Firefox | < 60.6.1 |
| Mozilla | Thunderbird | < 60.6.1 |
Related Weaknesses (CWE)
References
- https://access.redhat.com/errata/RHSA-2019:0966
- https://access.redhat.com/errata/RHSA-2019:1144
- https://bugzilla.mozilla.org/show_bug.cgi?id=1538006Issue TrackingPermissions RequiredVendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2019-09/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2019-10/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2019-12/Vendor Advisory
- https://access.redhat.com/errata/RHSA-2019:0966
- https://access.redhat.com/errata/RHSA-2019:1144
- https://bugzilla.mozilla.org/show_bug.cgi?id=1538006Issue TrackingPermissions RequiredVendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2019-09/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2019-10/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2019-12/Vendor Advisory
FAQ
What is CVE-2019-9813?
CVE-2019-9813 is a vulnerability with a CVSS score of 8.8 (HIGH). Incorrect handling of __proto__ mutations may lead to type confusion in IonMonkey JIT code and can be leveraged for arbitrary memory read and write. This vulnerability affects Firefox < 66.0.1, Firefo...
How severe is CVE-2019-9813?
CVE-2019-9813 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-2019-9813?
Check the references section above for vendor advisories and patch information. Affected products include: Mozilla Firefox, Mozilla Thunderbird.