RedhatCVE-2021-3827CVE-2021-3827
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
NONE
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N
AI Score
Confidence
High
EPSS
Percentile
52.1%
A flaw was found in keycloak, where the default ECP binding flow allows other authentication flows to be bypassed. By exploiting this behavior, an attacker can bypass the MFA authentication by sending a SOAP request with an AuthnRequest and Authorization header with the user’s credentials. The highest threat from this vulnerability is to confidentiality and integrity.
Affected configurations
| Vendor | Product | Version | CPE |
|---|---|---|---|
| redhat | keycloak | * | cpe:2.3:a:redhat:keycloak:*:*:*:*:*:*:*:* |
| redhat | single_sign-on | 7.0 | cpe:2.3:a:redhat:single_sign-on:7.0:*:*:*:*:*:*:* |
| redhat | enterprise_linux | 7.0 | cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:* |
| redhat | enterprise_linux | 8.0 | cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:-:*:*:* |
| redhat | single_sign-on | 7.5.0 | cpe:2.3:a:redhat:single_sign-on:7.5.0:*:*:*:*:*:*:* |
| redhat | enterprise_linux | 8.0 | cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:* |
| redhat | openshift_container_platform | 4.8 | cpe:2.3:a:redhat:openshift_container_platform:4.8:*:*:*:*:*:*:* |
| redhat | openshift_container_platform | 4.9 | cpe:2.3:a:redhat:openshift_container_platform:4.9:*:*:*:*:*:*:* |
CNA Affected
[
{
"product": "keycloak",
"vendor": "n/a",
"versions": [
{
"status": "affected",
"version": "Fixed in v18.0.0"
}
]
}
]References
Social References
More
Related
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
NONE
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N
AI Score
Confidence
High
EPSS
Percentile
52.1%