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Vulnerability · Published Sep 20, 2023 · Assigned by redhat

CVE-2022-3916Keycloak: session takeover with oidc offline refreshtokens

Medium 6.8

In plain English

A medium-severity session fixation in Red Hat Single Sign-On 7 from Red Hat. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.0% (higher than 61% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)6.8Medium
Exploit odds (30 days)1.0%top 38.5% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

A flaw was found in the offline_access scope in Keycloak. This issue would affect users of shared computers more (especially if cookies are not cleared), due to a lack of root session validation, and the reuse of session ids across root and user authentication sessions. This enables an attacker to resolve a user session attached to a previously authenticated user; when utilizing the refresh token, they will be issued a token for the original user.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Mavenorg.keycloak:keycloak-parent20.0.2GHSA-97g8-xfvw-q4hg

Affected products (as reported)

VendorProductVersions
Red Hat Red Hat Single Sign-On 7 see references
Red Hat Red Hat Single Sign-On 7.6.1 see references
Red Hat Red Hat Single Sign-On 7.6 for RHEL 7 see references
Red Hat Red Hat Single Sign-On 7.6 for RHEL 7 see references
Red Hat Red Hat Single Sign-On 7.6 for RHEL 8 see references
Red Hat Red Hat Single Sign-On 7.6 for RHEL 8 see references
Red Hat Red Hat Single Sign-On 7.6 for RHEL 9 see references
Red Hat Red Hat Single Sign-On 7.6 for RHEL 9 see references
Red Hat RHEL-8 based Middleware Containers see references
Red Hat RHEL-8 based Middleware Containers see references

Weakness: CWE-384 · Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N

References