Keycloak-services: keycloak-services: hotp race condition allows single otp code reuse across concurrent logins
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions |
|---|---|---|---|
| Red Hat | Red Hat Build of Keycloak | affected | — |
| Red Hat | Red Hat Build of Keycloak | affected | — |
| Red Hat | Red Hat Single Sign-On 7 | unaffected | — |
No data.
No data.
| Vendor | Product | Versions | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Red Hat | Red Hat Build Of Keycloak 26.4 |
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| Redhat | Build Of Keycloak |
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| Redhat | Single Sign-on |
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Vendor Workaround
Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.
No CVSS v4.0
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.163% probability within 30 days)
| Type | Values Removed | Values Added |
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| First Time appeared |
Red Hat
Red Hat red Hat Build Of Keycloak 26.4 Redhat build Of Keycloak Redhat single Sign-on |
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| Vendors & Products |
Red Hat
Red Hat red Hat Build Of Keycloak 26.4 Redhat build Of Keycloak Redhat single Sign-on |
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|---|---|---|
| Metrics |
ssvc
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| References |
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| Metrics |
threat_severity
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threat_severity
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| Description | A flaw was found in the HOTP authentication mechanism of the keycloak-services component, which provides identity and access management services. The issue occurs because the system validates a one-time password and updates its internal counter in two separate steps without proper locking. An attacker with a users password could exploit this timing gap to use a single one-time code to log in multiple times simultaneously. | |
| Title | Keycloak-services: keycloak-services: hotp race condition allows single otp code reuse across concurrent logins | |
| First Time appeared |
Redhat
Redhat build Keycloak Redhat red Hat Single Sign On |
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| Weaknesses | CWE-362 | |
| CPEs | cpe:/a:redhat:build_keycloak: cpe:/a:redhat:red_hat_single_sign_on:7 |
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| Vendors & Products |
Redhat
Redhat build Keycloak Redhat red Hat Single Sign On |
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| References |
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| Metrics |
cvssV3_1
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