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.
Published 2022-12-22 20:15:29
Updated 2023-01-04 16:17:16
View at NVD,   CVE.org

Exploit prediction scoring system (EPSS) score for CVE-2022-31742

Probability of exploitation activity in the next 30 days: 0.11%

Percentile, the proportion of vulnerabilities that are scored at or less: ~ 44 % EPSS Score History EPSS FAQ

CVSS scores for CVE-2022-31742

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source
6.5
MEDIUM CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
2.8
3.6
NIST

References for CVE-2022-31742

Products affected by CVE-2022-31742

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