Vulnerability Description
When processing a MAR update file, after the signature has been validated, an invalid name length could result in a heap overflow, leading to memory corruption and potentially arbitrary code execution. Within Firefox as released by Mozilla, this issue is only exploitable with the Mozilla-controlled signing key. This vulnerability affects Firefox < 80.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Mozilla | Firefox | < 80.0 |
Related Weaknesses (CWE)
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=1653371Issue TrackingPermissions RequiredVendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2020-36/Release NotesVendor Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1653371Issue TrackingPermissions RequiredVendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2020-36/Release NotesVendor Advisory
FAQ
What is CVE-2020-15667?
CVE-2020-15667 is a vulnerability with a CVSS score of 8.8 (HIGH). When processing a MAR update file, after the signature has been validated, an invalid name length could result in a heap overflow, leading to memory corruption and potentially arbitrary code execution...
How severe is CVE-2020-15667?
CVE-2020-15667 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-2020-15667?
Check the references section above for vendor advisories and patch information. Affected products include: Mozilla Firefox.