Vulnerability DatabaseCVE-2021-3856
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CVE-2021-3856
August 26, 2022
ClassLoaderTheme and ClasspathThemeResourceProviderFactory allows reading any file available as a resource to the classloader. By sending requests for theme resources with a relative path from an external HTTP client, the client will receive the content of random files if available.
Affected Packages
org.keycloak:keycloak-core (JAVA):
Affected version(s) >=1.0-alpha-1 <15.1.0
Fix Suggestion:
Update to version 15.1.0
Related Resources (7)
https://issues.redhat.com/browse/KEYCLOAK-19422
https://github.com/keycloak/keycloak
https://github.com/keycloak/keycloak/commit/73f0474008e1bebd0733e62a22aceda9e5de6743
https://bugzilla.redhat.com/show_bug.cgi?id=2010164
https://github.com/keycloak/keycloak/pull/8588
https://access.redhat.com/security/cve/CVE-2021-3856
https://nvd.nist.gov/vuln/detail/CVE-2021-3856
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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
NONE
Vulnerable System Availability
NONE
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
4.3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
NONE
Availability
NONE
Weakness Type (CWE)
Files or Directories Accessible to External Parties
CWE-552
Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
CWE-22
EPSS
Base Score:
0.36