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CVE-2023-0657

Good to know:

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Date: November 17, 2024

A flaw was found in Keycloak. This issue occurs due to improperly enforcing token types when validating signatures locally. This could allow an authenticated attacker to exchange a logout token for an access token and possibly gain access to data outside of enforced permissions.

Language: Java

Severity Score

Related Resources (8)

https://access.redhat.com/security/cve/CVE-2023-0657
https://access.redhat.com/errata/RHSA-2024:1868
https://access.redhat.com/errata/RHSA-2024:1867
https://github.com/keycloak/keycloak/security/advisories/GHSA-7fpj-9hr8-28vh
https://nvd.nist.gov/vuln/detail/CVE-2023-0657
https://bugzilla.redhat.com/show_bug.cgi?id=2166728
https://github.com/keycloak/keycloak
https://www.mend.io/vulnerability-database/CVE-2023-0657

Severity Score

Weakness Type (CWE)

Improper Authentication

CWE-287

Improper Access Control

CWE-284

Improper Verification of Cryptographic Signature

CWE-347

Authentication Bypass by Spoofing

CWE-290

Improper Check for Dropped Privileges

CWE-273

Top Fix

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CVSS v3.1

Base Score:
Attack Vector (AV): ADJACENT_NETWORK
Attack Complexity (AC): HIGH
Privileges Required (PR): LOW
User Interaction (UI): REQUIRED
Scope (S): UNCHANGED
Confidentiality (C): LOW
Integrity (I): LOW
Availability (A): NONE

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