CVE-2023-40545 PingFederate OAuth client_secret_jwt Authentication Bypass

High 8.8 Published Updated

Attackers can bypass authentication in PingFederate OAuth client_secret_jwt flows via crafted requests, requiring immediate patching.

Exploited in the wild
Not known
Login needed
Any signed-in user
Attackable
Over the internet
Victim action needed
Not needed
Fix
None listed

What is CVE-2023-40545?

CVE-2023-40545 is a high-severity authentication bypass vulnerability in PingFederate, published on 6 Feb 2024. Any signed-in user can exploit it over the network, with no action from the victim.

Official 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.

Weakness: CWE-306

Which versions are affected by CVE-2023-40545?

It affects 1 product.

Products include Pingidentity Pingfederate.

How do I fix CVE-2023-40545?

No fix has been published for CVE-2023-40545 yet. Limit exposure of the affected software until one is available.

Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.

Is CVE-2023-40545 being exploited?

There is no known exploitation of CVE-2023-40545 in the wild and no public exploit code.

Sources

Also known as GHSA-37j2-h4x2-rp3v.

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