Vulnerability DatabaseCVE-2020-35509
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CVE-2020-35509
August 23, 2022
A flaw was found in keycloak affecting versions 11.0.3 and 12.0.0. An expired certificate would be accepted by the direct-grant authenticator because of missing time stamp validations. The highest threat from this vulnerability is to data confidentiality and integrity.
Affected Packages
org.keycloak:keycloak-core (JAVA):
Affected version(s) >=1.0-alpha-1 <14.0.0
Fix Suggestion:
Update to version 14.0.0
Related Resources (8)
https://nvd.nist.gov/vuln/detail/CVE-2020-35509
https://github.com/keycloak/keycloak
https://access.redhat.com/security/cve/cve-2020-35509
https://github.com/keycloak/keycloak/pull/6330
https://github.com/keycloak/keycloak/blob/4f330f4a57cbfcf6202b60546518261c66e59a35/services/src/main/java/org/keycloak/authentication/authenticators/x509/ValidateX509CertificateUsername.java#L74-L76
https://bugzilla.redhat.com/show_bug.cgi?id=1912427
https://github.com/keycloak/keycloak/commit/478319348bdfdb9b6d39122f41edf2af79f679bb
https://github.com/keycloak/keycloak/pull/8067
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CVSS v4
Base Score:
5.3
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
NONE
Vulnerable System Confidentiality
LOW
Vulnerable System Integrity
LOW
Vulnerable System Availability
NONE
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
5.4
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
Weakness Type (CWE)
Improper Certificate Validation
CWE-295
Improper Input Validation
CWE-20
EPSS
Base Score:
0.09