4.8

CVSS Score

3.1

-

CVSS Score

Basic Information

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CVE-2024-7318

CVE-2024-7318: Keycloaks's One Time Passcode (OTP) is valid longer than expiration timeSeverity

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.

(GitHub Advisory)

Miggo Vulnerability Database

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CVE-2024-7318

CVE-2024-7318:

4.8

CVSS Score

3.1

-

CVSS Score

Basic Information

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Technical Details

Package Name	Ecosystem	Vulnerable Versions	First Patched Version
org.keycloak:keycloak-core	maven	< 24.0.7	24.0.7
org.keycloak:keycloak-core	maven	>= 25.0.0, < 25.0.4	25.0.4

Technical Details

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Miggo AI

Root Cause Analysis

The vulnerability stems from improper time window handling in TOTP validation. Keycloak's TOTP implementation uses a 'look around window' parameter to account for clock skew. When set to 1 (default), the validation logic checks three 30-second time steps: previous, current, and next. However, the system should invalidate codes after their designated 30-second period. The vulnerable function (TOTPProvider.validateCode) incorrectly allows codes to remain valid for an additional 30 seconds by including the next time step in its validation range. This matches the observed behavior where codes are valid for 60 seconds total. The confidence is high because this pattern aligns with standard TOTP implementations and the described vulnerability mechanism.

Vulnerable functions

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WAF Protection Rules

WAF Rule

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Reasoning

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