A flaw was found in open-vm-tools.

VMware Tools for Windows contains an authentication bypass vulnerability due to improper access control. A malicious actor with non-administrative privileges on a guest VM may gain ability to perform certain high privilege operations within that VM.

VMware Tools contains a SAML token signature bypass vulnerability. A malicious actor with man-in-the-middle (MITM) network positioning between vCenter server and the virtual machine may be able to bypass SAML token signature verification, to perform VMware Tools Guest Operations.

References:

https://www.vmware.com/security/advisories/VMSA-2023-0019.html https://www.openwall.com/lists/oss-security/2023/08/31/1 https://github.com/vmware/open-vm-tools/blob/CVE-2023-20900.patch/CVE-2023-20900.patch

A fully compromised ESXi host can force VMware Tools to fail to authenticate host-to-guest operations, impacting the confidentiality and integrity of the guest virtual machine.

VMware Tools (12.0.0, 11.x.y and 10.x.y) contains a local privilege escalation vulnerability. A malicious actor with local non-administrative access to the Guest OS can escalate privileges as a root user in the virtual machine.

VMware Tools for Windows(12.0.0, 11.x.y and 10.x.y) contains an XML External Entity (XXE) vulnerability. A malicious actor with non-administrative local user privileges in the Windows guest OS, where VMware Tools is installed, may exploit this issue leading to a denial-of-service condition or unintended information disclosure.

This vulnerability allows local attackers to escalate privileges on affected installations of VMware Workstation. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability. The specific flaw exists within the VGAuthService service. The issue results from the lack of proper validation of a user-supplied OpenSSL configuration file prior to using it. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of SYSTEM.

The repair operation of VMware Tools for Windows 10.x.y has a race condition which may allow for privilege escalation in the Virtual Machine where Tools is installed. This vulnerability is not present in VMware Tools 11.x.y since the affected functionality is not present in VMware Tools 11.

VMware Tools (10.x and prior before 10.3.0) contains an out-of-bounds read vulnerability in HGFS. Successful exploitation of this issue may lead to information disclosure or may allow attackers to escalate their privileges on the guest VMs. In order to be able to exploit this issue, file sharing must be enabled.

VMware Tools prior to 10.0.9 contains multiple file system races in libDeployPkg, related to the use of hard-coded paths under /tmp. Successful exploitation of this issue may result in a local privilege escalation. CVSS:3.0/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H

vm-support 0.88 in VMware Tools, as distributed with VMware Workstation through 10.0.3 and other products, allows local users to write to arbitrary files via a symlink attack on a file in /tmp.

vm-support 0.88 in VMware Tools, as distributed with VMware Workstation through 10.0.3 and other products, uses 0644 permissions for the vm-support archive, which allows local users to obtain sensitive information by extracting files from this archive.