CVE-2024-48916

A vulnerability in the Ceph Rados Gateway (RadosGW) OIDC provider allows attackers to bypass JWT signature verification by supplying a token with "none" as the algorithm (alg). This occurs because the implementation fails to enforce strict signature validation, enabling attackers to forge valid tokens without a signature.

This vulnerability is rated Important due to its ability to bypass JWT signature verification in Ceph Rados Gateway, allowing attackers to forge tokens and gain unauthorized access.

OpenShift Data Foundation (ODF) is affected but not vulnerable to this issue. To exploit this issue, an attacker needs to use OIDC and manually set the algorithm to "none", then RadosGW will not validate the signature on a JWT. ODF is protected because it uses the Vault API to interface with OIDC (and other providers) and it does not support "none" as an algorithm type.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.