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Ubuntu Security Notice USN-6365-1

Ubuntu Security Notice 6365-1 - It was discovered that Open VM Tools incorrectly handled SAML tokens. A remote attacker could possibly use this issue to bypass SAML token signature verification and perform VMware Tools Guest Operations.

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Ubuntu Security Notice USN-6365-1
September 13, 2023

open-vm-tools vulnerability

A security issue affects these releases of Ubuntu and its derivatives:

  • Ubuntu 23.04
  • Ubuntu 22.04 LTS
  • Ubuntu 20.04 LTS

Summary:

Open VM Tools could allow unintended access to network services.

Software Description:

  • open-vm-tools: Open VMware Tools for virtual machines hosted on VMware

Details:

It was discovered that Open VM Tools incorrectly handled SAML tokens. A
remote attacker could possibly use this issue to bypass SAML token
signature verification and perform VMware Tools Guest Operations.

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 23.04:
open-vm-tools 2:12.1.5-3ubuntu0.23.04.2

Ubuntu 22.04 LTS:
open-vm-tools 2:12.1.5-3~ubuntu0.22.04.3

Ubuntu 20.04 LTS:
open-vm-tools 2:11.3.0-2ubuntu0~ubuntu20.04.6

In general, a standard system update will make all the necessary changes.

References:
https://ubuntu.com/security/notices/USN-6365-1
CVE-2023-20900

Package Information:
https://launchpad.net/ubuntu/+source/open-vm-tools/2:12.1.5-3ubuntu0.23.04.2
https://launchpad.net/ubuntu/+source/open-vm-tools/2:12.1.5-3~ubuntu0.22.04.3

https://launchpad.net/ubuntu/+source/open-vm-tools/2:11.3.0-2ubuntu0~ubuntu20.04.6

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