Home/CVE/It was found that SAML authentication in Keycloak 3.4.3.Final incorrectly authenticated expired certificates. A maliciou
CVE

CVE-2018-10894

It was found that SAML authentication in Keycloak 3.4.3.Final incorrectly authenticated expired certificates. A maliciou

It was found that SAML authentication in Keycloak 3.4.3.Final incorrectly authenticated expired certificates. A malicious user could use this to access unauthorized data or possibly conduct further attacks.

MEDIUM · CVSS 5.4 EPSS 0.00054
Monitor
  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-295Improper Certificate Validation
CWE-345Insufficient Verification of Data Authenticity
▤

Affected Products & Versions

2
redhat keycloakall versions
redhat single sign-onall versions
▤

Affected Packages

2
Language-ecosystem packages (from OSV) tied to this CVE, with the version that fixes it - the dependency-level detail NVD doesn’t carry.
Maven org.keycloak:keycloak-saml-adapter-core MODERATE fixed in 4.4.0.Final
Maven org.keycloak:keycloak-services MODERATE fixed in 4.4.0.Final
▣

Scoring & Timeline

5.4
MEDIUM · CVSS v3.0 · secalert@redhat.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD01 Aug 2018 · 05:29 PM
CVSS VectorCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
⚑

Vendor Advisories

4
rhsaRHSA-2018:3593Important
rhsaRHSA-2018:3592Important
rhsaRHSA-2018:3595Important
rhsaRHSA-2019:0877Important
🔗

References & Sources

1
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-10894Issue TrackingPatchVendor Advisory
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