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CVE-2024-7318: Keycloak-core: one time passcode (otp) is valid longer than expiration timeseverity

Description

A vulnerability was found in Keycloak. Expired OTP codes are still usable when using FreeOTP when the OTP token period is set to 30 seconds (default). Instead of expiring and deemed unusable around 30 seconds in, the tokens are valid for an additional 30 seconds totaling 1 minute.
A one time passcode that is valid longer than its expiration time increases the attack window for malicious actors to abuse the system and compromise accounts. Additionally, it increases the attack surface because at any given time, two OTPs are valid.

Classification

CVE ID: CVE-2024-7318

Exploit Prediction Scoring System (EPSS)

EPSS Score: 0.05% (probability of being exploited)

EPSS Percentile: 23.14% (scored less or equal to compared to others)

EPSS Date: 2025-02-04 (when was this score calculated)

References

https://access.redhat.com/errata/RHSA-2024:6502
https://access.redhat.com/errata/RHSA-2024:6503
https://access.redhat.com/security/cve/CVE-2024-7318
https://bugzilla.redhat.com/show_bug.cgi?id=2301876

Timeline