VulnerabilityModified
CVE-2021-3856
ClassLoaderTheme and ClasspathThemeResourceProviderFactory allows reading any file available as a resource to the classloader.
MEDIUM 4.3EPSS 1.13%
Does this matter?
Lower severity and a low EPSS score (1.13%). Track it; it rarely justifies an emergency change on its own.
Description
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 3.1
- 4.3 MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
- EPSS
- 1.13% probability · 65th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-552, CWE-22
- Affected
- redhat/keycloak
- Source
- secalert@redhat.com
References
- https://access.redhat.com/security/cve/CVE-2021-3856Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2010164Issue Tracking, Vendor Advisory
- https://github.com/keycloak/keycloak/commit/73f0474008e1bebd0733e62a22aceda9e5de6743Patch, Third Party Advisory
- https://github.com/keycloak/keycloak/pull/8588Patch, Third Party Advisory
- https://issues.redhat.com/browse/KEYCLOAK-19422Permissions Required, Vendor Advisory
- https://access.redhat.com/security/cve/CVE-2021-3856Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2010164Issue Tracking, Vendor Advisory
- https://github.com/keycloak/keycloak/commit/73f0474008e1bebd0733e62a22aceda9e5de6743Patch, Third Party Advisory
- https://github.com/keycloak/keycloak/pull/8588Patch, Third Party Advisory
- https://issues.redhat.com/browse/KEYCLOAK-19422Permissions Required, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.