InfoDisclosure: Hex-Encoded CF API Credentials in VMware Tanzu App Service Logs
CVE-2023-20891 Published on July 26, 2023
VMware Tanzu Application Service for VMs and Isolation Segment information disclosure vulnerability
The VMware Tanzu Application Service for VMs and Isolation Segment contain an information disclosure vulnerability due to the logging of credentials in hex encoding in platform system audit logs. A malicious non-admin user who has access to the platform system audit logs can access hex encoded CF API admin credentials and can push new malicious versions of an application. In a default deployment non-admin users do not have access to the platform system audit logs.
Vulnerability Analysis
CVE-2023-20891 can be exploited with network access, and requires small amount of user privileges. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have a high impact on confidentiality, with no impact on integrity and availability.
Weakness Type
Insertion of Sensitive Information into Log File
Information written to log files can be of a sensitive nature and give valuable guidance to an attacker or expose sensitive user information.
Products Associated with CVE-2023-20891
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Affected Versions
VMware Tanzu Application Service for VMs:- Version 4.0.x and below 4.0.5 is affected.
- Version 3.0.x and below 3.0.14 is affected.
- Version 2.13.x and below 2.13.24 is affected.
- Version 2.11.x and below 2.11.42 is affected.
- Version 4.0.x and below 4.0.4 is affected.
- Version 3.0.x and below 3.0.13 is affected.
- Version 2.13.x and below 2.13.20 is affected.
- Version 2.11.x and below 2.11.35 is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.