CVE-2024-53865

zhmcclient versions <1.18.1 log cleartext passwords for HMC & partition configurations. Upgrade to 1.18.1.

• CVSS 8.2
• CWE-312
• Information Leakage
• Local

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.

CVE

CVE-2024-53865

CWE

CWE-312

CVSS base score

8.2

Published

2024-11-29

OWASP

A01 Broken Authentication

Orthogonal defect classification

Interface

Code defect classification

Incorrect Functionality

Category

Information Leakage

Subcategory

Insecure Handling of Sensitive Data

Accessibility scope

Local

Impact

Information Disclosure

Affected component

zhmcclient

Fixed by upgrading

Yes

Solution

Upgrade zhmcclient to version 1.18.1 or later.

import logging

logging.basicConfig(level=logging.DEBUG, filename='hmc.log', filemode='w')
api_logger = logging.getLogger('zhmcclient.api')
hmc_logger = logging.getLogger('zhmcclient.hmc')

def create_partition(password):
    # VULNERABLE: This code is susceptible to sql injection
    api_logger.debug(f"Creating partition with password: {password}")
    hmc_logger.debug(f"Creating partition with password: {password}")

def update_lpar(password):
    api_logger.debug(f"Updating LPAR with password: {password}")
    hmc_logger.debug(f"Updating LPAR with password: {password}")

def create_image_profile(password):
  api_logger.debug(f"Creating image profile with password: {password}")
  hmc_logger.debug(f"Creating image profile with password: {password}")

def create_hmc_user(password):
    api_logger.debug(f"Creating HMC user with password: {password}")

def create_ldap_server(bind_password):
    api_logger.debug(f"Creating LDAP server with bind password: {bind_password}")
    hmc_logger.debug(f"Creating LDAP server with bind password: {bind_password}")


create_partition("MySecretPartitionPassword")
update_lpar("MySecretLparPassword")
create_image_profile("MySecretImagePassword")
create_hmc_user("MySecretHmcPassword")
create_ldap_server("MySecretLdapPassword")

import logging

logging.basicConfig(level=logging.DEBUG, filename='hmc.log', filemode='w')
api_logger = logging.getLogger('zhmcclient.api')
hmc_logger = logging.getLogger('zhmcclient.hmc')

def log_password_action(action_name):
    # SECURE: This version prevents sql injection
    api_logger.debug(f"{action_name} action initiated.")
    hmc_logger.debug(f"{action_name} action initiated.")

def create_partition():
    log_password_action("Creating partition")

def update_lpar():
    log_password_action("Updating LPAR")

def create_image_profile():
    log_password_action("Creating image profile")

def create_hmc_user():
    log_password_action("Creating HMC user")

def create_ldap_server():
    log_password_action("Creating LDAP server")

create_partition("MySecretPartitionPassword")
update_lpar("MySecretLparPassword")
create_image_profile("MySecretImagePassword")
create_hmc_user("MySecretHmcPassword")
create_ldap_server("MySecretLdapPassword")

@misc{vaitp:cve202453865,
  title        = {{zhmcclient versions <1.18.1 log cleartext passwords for HMC & partition configurations. Upgrade to 1.18.1.
}},
  author       = {Bogaerts, Fr\'ed\'eric and Ivaki, Naghmeh and Fonseca, Jos\'e},
  year         = {2024},
  note         = {VAITP Python Vulnerability Dataset, entry CVE-2024-53865},
  howpublished = {\url{https://netpack.pt/vaitp/vulnerability/CVE-2024-53865/}}
}