High severity · published Jun 3, 2024
CVE-2024-4540
Keycloak: exposure of sensitive information in pushed authorization requests (par) kc_restart cookie
7.5
CVSS
0.6%
EPSS
No
On KEV
Description
A flaw was found in Keycloak in OAuth 2.0 Pushed Authorization Requests (PAR). Client-provided parameters were found to be included in plain text in the KC_RESTART cookie returned by the authorization server's HTTP response to a `request_uri` authorization request, possibly leading to an information disclosure vulnerability.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.6% · higher than 46% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
RB
RHEL-8 based Middleware Containers · Red Hat
All versions, or not specified · source: vendor
RH
Red Hat Single Sign-On 7.6 for RHEL 7 · Red Hat
All versions, or not specified · source: vendor
RH
Red Hat Single Sign-On 7.6 for RHEL 8 · Red Hat
All versions, or not specified · source: vendor
RH
Red Hat Single Sign-On 7.6 for RHEL 9 · 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
RH
Red Hat build of Keycloak 24 · Red Hat
All versions, or not specified · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2024-4540
CVE.org
https://www.cve.org/CVERecord?id=CVE-2024-4540
vendor-advisory
https://access.redhat.com/errata/RHSA-2024:3566
vendor-advisory
https://access.redhat.com/errata/RHSA-2024:3567
vendor-advisory
https://access.redhat.com/errata/RHSA-2024:3568
vendor-advisory
https://access.redhat.com/errata/RHSA-2024:3570
vendor-advisory
https://access.redhat.com/errata/RHSA-2024:3572
vendor-advisory
https://access.redhat.com/errata/RHSA-2024:3573
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