CVE-2021-3856

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.

CVSS v3 4.3 MEDIUM

4.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.8 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://access.redhat.com/security/cve/CVE-2021-3856	Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2010164	Issue Tracking Vendor Advisory
https://github.com/keycloak/keycloak/commit/73f0474008e1bebd0733e62a22aceda9e5de6743	Patch Third Party Advisory
https://github.com/keycloak/keycloak/pull/8588	Patch Third Party Advisory
https://issues.redhat.com/browse/KEYCLOAK-19422	Permissions Required Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:redhat:keycloak:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2022-08-26 16:15

Updated : 2023-07-10 19:27

NVD link : CVE-2021-3856

Mitre link : CVE-2021-3856

CVE.ORG link : CVE-2021-3856

JSON object : View

Products Affected

redhat

keycloak

CWE

CWE-22

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

CWE-552

Files or Directories Accessible to External Parties

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