Staging Environment: Content and features may be unstable or change without notice.
Advisory details: github_osv / GHSA-3w4v-rvc4-2xpw
Advisory ID github_osv/GHSA-3w4v-rvc4-2xpw
Aliases CVE-2021-3856
Summary Keycloak has Files or Directories Accessible to External Parties 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.
Status Published
Exploitability 0.5
Weighted Severity 3.9
Risk 1.9
Affected and Fixed Packages Package Details
Introduced and Fixed Package Commit Patches Package Commit Patches Details
Weaknesses (2)
CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
CWE-552 Files or Directories Accessible to External Parties
System Score Found at
cvssv3.1 4.3 https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2022/08/GHSA-3w4v-rvc4-2xpw/GHSA-3w4v-rvc4-2xpw.json
generic_textual MODERATE
Reference id Reference type URL
https://bugzilla.redhat.com/show_bug.cgi?id=2010164
https://github.com/keycloak/keycloak
https://github.com/keycloak/keycloak/commit/73f0474008e1bebd0733e62a22aceda9e5de6743
https://github.com/keycloak/keycloak/pull/8588
https://issues.redhat.com/browse/KEYCLOAK-19422
CVE-2021-3856 https://access.redhat.com/security/cve/CVE-2021-3856
CVE-2021-3856 https://nvd.nist.gov/vuln/detail/CVE-2021-3856
No exploits are available.

No EPSS data available for this advisory.

Patch URL
There are no known patches.
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N Found at https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2022/08/GHSA-3w4v-rvc4-2xpw/GHSA-3w4v-rvc4-2xpw.json
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none

There are no SSVC decisions available.