Vulnerability Description
When aborting an operation, such as a fetch, an abort signal may be deleted while alerting the objects to be notified. This results in a use-after-free and we presume that with enough effort it could have been exploited to run arbitrary code. This vulnerability affects Firefox ESR < 68.12 and Thunderbird < 68.12.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Mozilla | Firefox Esr | < 68.12 |
| Mozilla | Thunderbird | < 68.12 |
Related Weaknesses (CWE)
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=1656957Issue TrackingPermissions RequiredVendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2020-37/Release NotesVendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2020-40/Release NotesVendor Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1656957Issue TrackingPermissions RequiredVendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2020-37/Release NotesVendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2020-40/Release NotesVendor Advisory
FAQ
What is CVE-2020-15669?
CVE-2020-15669 is a vulnerability with a CVSS score of 8.8 (HIGH). When aborting an operation, such as a fetch, an abort signal may be deleted while alerting the objects to be notified. This results in a use-after-free and we presume that with enough effort it could ...
How severe is CVE-2020-15669?
CVE-2020-15669 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-2020-15669?
Check the references section above for vendor advisories and patch information. Affected products include: Mozilla Firefox Esr, Mozilla Thunderbird.