zhmcclient is a pure Python client library for the IBM Z HMC Web Services API. In affected versions the Python package zhmcclient writes password-like properties in clear text into its HMC and API logs in the following cases: 1. The boot-ftp-password and ssc-master-pw properties when creating or updating a partition in DPM mode, in the zhmcclient API and HMC logs. 2. The ssc-master-pw and zaware-master-pw properties when updating an LPAR in classic mode, in the zhmcclient API and HMC logs. 3. The ssc-master-pw and zaware-master-pw properties when creating or updating an image activation profile in classic mode, in the zhmcclient API and HMC logs. 4. The password property when creating or updating an HMC user, in the zhmcclient API log. 5. The bind-password property when creating or updating an LDAP server definition, in the zhmcclient API and HMC logs. This issue affects only users of the zhmcclient package that have enabled the Python loggers named zhmcclient.api (for the API log) or zhmcclient.hmc (for the HMC log) and that use the functions listed above. This issue has been fixed in zhmcclient version 1.18.1. Users are advised to upgrade. There are no known workarounds for this vulnerability.
The product stores sensitive information in cleartext within a resource that might be accessible to another control sphere.