medium
6.5
CWE
532
Advisory Published
Updated

CVE-2023-20891: VMware Tanzu Application Service for VMs and Isolation Segment information disclosure vulnerability

First published: Wed Jul 26 2023(Updated: )

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.

Credit: security@vmware.com security@vmware.com

Affected SoftwareAffected VersionHow to fix
VMware Isolation Segment>=2.11.0<2.11.35
VMware Isolation Segment>=2.13.0<2.13.20
VMware Isolation Segment>=3.0.0<3.0.13
VMware Isolation Segment>=4.0.0<4.0.4
VMware Tanzu Application Service>=2.11.0<2.11.42
VMware Tanzu Application Service>=3.0.0<3.0.14
VMware Tanzu Application Service>=2.13.0<2.13.24
VMware Tanzu Application Service>=4.0.0<4.0.5

Remedy

https://www.vmware.com/security/advisories/VMSA-2023-0016.html

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Reference Links

Frequently Asked Questions

  • What is CVE-2023-20891?

    CVE-2023-20891 is an information disclosure vulnerability in VMware Tanzu Application Service for VMs and Isolation Segment.

  • What is the severity of CVE-2023-20891?

    CVE-2023-20891 has a severity rating of 6.5 (Medium).

  • How does CVE-2023-20891 affect VMware Tanzu Application Service for VMs?

    CVE-2023-20891 allows a malicious non-admin user with access to the platform system audit logs to access hex encoded CF API credentials.

  • How can I fix CVE-2023-20891?

    To fix CVE-2023-20891, upgrade to a version of VMware Tanzu Application Service for VMs or Isolation Segment that is not affected by the vulnerability.

  • Where can I find more information about CVE-2023-20891?

    More information about CVE-2023-20891 can be found in the VMWare security advisory VMSA-2023-0016.

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