CVE-2022-31742
MEDIUMFirefox < 101 and Firefox ESR < 91.10 - Cross-Origin Account Linking via WebAuthn Timing Attack
Title source: llmDescription
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.
References (4)
Core 4
Core References
Issue Tracking, Permissions Required, Vendor Advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1730434
Vendor 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/
Scores
CVSS v3
6.5
EPSS
0.0036
EPSS Percentile
58.0%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
CISA SSVC
Vulnrichment
Exploitation
poc
Automatable
no
Technical Impact
partial
Details
CWE
CWE-203
Status
published
Products (3)
mozilla/firefox
< 101
mozilla/firefox_esr
< 91.10
mozilla/thunderbird
< 91.10
Published
Dec 22, 2022
Tracked Since
Feb 18, 2026