Vulnerability Description
An attacker could have exploited a timing attack by sending a large number of allowCredential entries and detecting the difference between invalid key handles and cross-origin key handles. This could have led to cross-origin account linking in violation of WebAuthn goals. This vulnerability affects Thunderbird < 91.10, Firefox < 101, and Firefox ESR < 91.10.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Mozilla | Firefox | < 101 |
| Mozilla | Firefox Esr | < 91.10 |
| Mozilla | Thunderbird | < 91.10 |
Related Weaknesses (CWE)
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=1730434Issue TrackingPermissions RequiredVendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2022-20/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2022-21/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2022-22/Vendor Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1730434Issue TrackingPermissions RequiredVendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2022-20/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2022-21/Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2022-22/Vendor Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1730434Issue TrackingPermissions RequiredVendor Advisory
FAQ
What is CVE-2022-31742?
CVE-2022-31742 is a vulnerability with a CVSS score of 6.5 (MEDIUM). An attacker could have exploited a timing attack by sending a large number of allowCredential entries and detecting the difference between invalid key handles and cross-origin key handles. This could ...
How severe is CVE-2022-31742?
CVE-2022-31742 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2022-31742?
Check the references section above for vendor advisories and patch information. Affected products include: Mozilla Firefox, Mozilla Firefox Esr, Mozilla Thunderbird.