zhmc-ansible-modules: Cleartext Storage of Sensitive Information
CVE-2024-53979 is a high-severity cleartext storage of sensitive information vulnerability in zhmc-ansible-modules from Zhmcclient, with a CVSS 3.1 base score of 8.2 out of 10. It can be exploited with local access to the system by an attacker with administrator privileges, without any action from a user. Affected zhmc-ansible-modules versions: < 1.9.3. The record does not name a fixed version, so check the vendor advisory. There is no confirmed exploitation so far. EPSS estimates a 0.14% chance of exploitation within 30 days, which is low compared with other CVEs.
High severity with no evidence of exploitation so far.
What to do
- Update zhmc to 1.9.3 or a later version.
- Read the advisory on github.com for workarounds and exact fixed builds.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Zhmcclient | zhmc-ansible-modules | < 1.9.3 | Not stated |
| IBM | zhmc | before 1.9.3 | 1.9.3 |
Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.
How the severity score breaks down
- Attack vector
- LocalThe attacker needs local access or must trick a user into running something.
- Attack complexity
- LowNo special conditions are needed; the attack works reliably.
- Privileges required
- HighAdministrator-level access is required first.
- User interaction
- NoneNo action by a victim is required.
- Scope
- ChangedThe attack can reach beyond the vulnerable component into other systems.
- Confidentiality
- HighAll data handled by the component can be read.
- Integrity
- HighData or code can be modified at will.
- Availability
- HighThe component can be taken down completely.
Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H. Scored by CNA (github.com).
Official description
ibm.ibm_zhmc is an Ansible collection for the IBM Z HMC. The Ansible collection "ibm.ibm_zhmc" writes password-like properties in clear text into its log file and into the output returned by some of its Ansible module in the following cases: 1. The 'boot_ftp_password' and 'ssc_master_pw' properties are passed as input to the zhmc_partition Ansible module. 2. The 'ssc_master_pw' and 'zaware_master_pw' properties are passed as input to the zhmc_lpar Ansible module. 3. The 'password' property is passed as input to the zhmc_user Ansible module (just in log file, not in module output). 4. The 'bind_password' property is passed as input to the zhmc_ldap_server_definition Ansible module. These properties appear in the module output only when they were specified in the module input and when creating or updating the corresponding resources. They do not appear in the output when retrieving facts for the corresponding resources. These properties appear in the log file only when the "log_file" module input parameter is used. By default, no log file is created. This issue has been fixed in ibm.ibm_zhmc version 1.9.3. Users are advised to upgrade. There are no known workarounds for this vulnerability.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Cleartext Storage of Sensitive Information
The product stores sensitive information in cleartext within a resource that might be accessible to another control sphere.
How developers prevent this class of flaw
- When storing data in the cloud (e.g., S3 buckets, Azure blobs, Google Cloud Storage, etc.), use the provider's controls to encrypt the data at rest.
- In some systems/environments such as cloud, the use of double encryption (at both the software and hardware layer) might be required, and the developer might be solely responsible for both layers, instead of shared responsibility with the administrator of the broader system/environment.
More Cleartext Storage of Sensitive Information vulnerabilities (CWE-312)
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: none, automatable: no, technical impact: total).
- Record last changed materially (score, affected products, status or references).
References
Patches and release notes
Recent Cleartext Storage of Sensitive Information vulnerabilities
- 8.2 High severity
- 7.5 High severity
- 7.5 High severity
- 7.0 High severity
- 8.6 High severity
- 7.7 High severity
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