Vulnerability Description
For native-to-JS bridging, the app requires a unique token to be passed that ensures non-app code can't call the bridging functions. That token was being used for JS-to-native also, but it isn't needed in this case, and its usage was also leaking this token. This vulnerability affects Firefox for iOS < 25.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Mozilla | Firefox | < 25.0 |
Related Weaknesses (CWE)
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=1632387Permissions Required
- https://www.mozilla.org/security/advisories/mfsa2020-15/Vendor Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1632387Permissions Required
- https://www.mozilla.org/security/advisories/mfsa2020-15/Vendor Advisory
FAQ
What is CVE-2020-6830?
CVE-2020-6830 is a vulnerability with a CVSS score of 7.5 (HIGH). For native-to-JS bridging, the app requires a unique token to be passed that ensures non-app code can't call the bridging functions. That token was being used for JS-to-native also, but it isn't neede...
How severe is CVE-2020-6830?
CVE-2020-6830 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2020-6830?
Check the references section above for vendor advisories and patch information. Affected products include: Mozilla Firefox.