Low severity · published Nov 17, 2024
CVE-2023-0657
Keycloak: impersonation via logout token exchange
3.4
CVSS
0.3%
EPSS
No
On KEV
Description
A flaw was found in Keycloak. This issue occurs due to improperly enforcing token types when validating signatures locally. This could allow an authenticated attacker to exchange a logout token for an access token and possibly gain access to data outside of enforced permissions.
CVSS vector
CVSS:3.1/AV:A/AC:H/PR:L/UI:R/S:U/C:L/I:L/A:N
Attack vector
Adjacent
Complexity
High
Privileges
Low
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 23% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
RH
Red Hat Single Sign-On 7 · Red Hat
All versions, or not specified · source: vendor
RH
Red Hat build of Keycloak 22 · Red Hat
All versions, or not specified · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-0657
CVE.org
https://www.cve.org/CVERecord?id=CVE-2023-0657
access.redhat.com
https://access.redhat.com/errata/RHSA-2024:1867
access.redhat.com
https://access.redhat.com/errata/RHSA-2024:1868
access.redhat.com
https://access.redhat.com/security/cve/CVE-2023-0657
bugzilla.redhat.com
https://bugzilla.redhat.com/show_bug.cgi?id=2166728
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