CVE-2025-30205 in kanidm-provision
Summary
by MITRE • 03/24/2025
kanidim-provision is a helper utility that uses kanidm's API to provision users, groups and oauth2 systems. Prior to version 1.2.0, a faulty function intrumentation in the (optional) kanidm patches provided by kandim-provision will cause the provisioned admin credentials to be leaked to the system log. This only impacts users which both use the provided patches and provision their `admin` or `idm_admin` account credentials this way. No other credentials are affected. Users should recompile kanidm with the newest patchset from tag `v1.2.0` or higher. As a workaround, the user can set the log level `KANIDM_LOG_LEVEL` to any level higher than `info`, for example `warn`.
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Analysis
by VulDB Data Team • 03/24/2025
The vulnerability identified as CVE-2025-30205 affects the kanidm-provision utility, a tool designed to automate user, group, and OAuth2 system provisioning through kanidm's API interface. This issue represents a critical logging security flaw that emerged from improper function instrumentation within the optional kanidm patches distributed with the provisioning utility. The vulnerability specifically targets the handling of administrative credentials during the provisioning process, creating a significant risk for systems that rely on these patches for account management operations.
The technical flaw manifests in the logging mechanism where administrative credentials intended for provisioning are inadvertently written to system logs due to faulty instrumentation in the patch functionality. This occurs when users employ the provided patches to provision their admin or idm_admin account credentials, creating a direct path for sensitive information exposure. The vulnerability is classified under CWE-532, which addresses "Information Exposure Through Log Data," and aligns with ATT&CK technique T1562.001 for "Disable or Modify Tools" and T1078.004 for "Valid Accounts" as it enables unauthorized access through credential exposure. The flaw is particularly concerning because it only affects specific administrative accounts while leaving other credentials unaffected, making it a targeted information disclosure vulnerability.
The operational impact of this vulnerability extends beyond simple credential exposure, as it creates potential attack vectors for malicious actors seeking to escalate privileges within the kanidm environment. Attackers who gain access to system logs could extract administrative credentials and use them to gain unauthorized access to the identity management system, potentially compromising the entire user and group management infrastructure. This vulnerability directly impacts the principle of least privilege by exposing administrative capabilities to unauthorized parties and could lead to privilege escalation, account takeover, and potential data breaches within the organization's identity management ecosystem.
Organizations utilizing kanidm-provision with the affected patches must immediately implement remediation measures to address this security gap. The primary recommended fix involves recompiling kanidm with the updated patchset from tag v1.2.0 or higher, which resolves the faulty instrumentation that causes credential leakage. As a temporary workaround, administrators can mitigate the risk by adjusting the log level through the KANIDM_LOG_LEVEL environment variable to any level higher than info, such as warn or error. This approach prevents the logging of sensitive credential information while the permanent patch is being implemented. The vulnerability demonstrates the importance of proper logging practices and input sanitization in security-critical applications, particularly those handling administrative credentials where the exposure of even a single administrative account can compromise the entire system. Organizations should also conduct thorough audits of their logging configurations to ensure no other sensitive information is being inadvertently exposed through similar mechanisms, aligning with security best practices outlined in NIST SP 800-92 and ISO/IEC 27001 controls for information security management.