Critical severity · published Feb 6, 2024
CVE-2023-40545
PingFederate OAuth client_secret_jwt Authentication Bypass
9.8
CVSS
0.9%
EPSS
No
On KEV
Description
Authentication bypass when an OAuth2 Client is using client_secret_jwt as its authentication method on affected 11.3 versions via specially crafted requests.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.9% · higher than 61% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
PI
PingFederate · Ping Identity
11.3.0 through 11.3.2 · source: vendor, NVD, CISA
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-40545
CVE.org
https://www.cve.org/CVERecord?id=CVE-2023-40545
Release Notes
https://docs.pingidentity.com/r/en-us/pingfederate-113/hro1701116403236
Permissions Required
https://support.pingidentity.com/s/article/SECADV040-PingFederate-OAuth-Client-Authentication-Bypass
Release Notes
https://www.pingidentity.com/en/resources/downloads/pingfederate/previous-releases.html
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