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Ubuntu Security Notice USN-6463-2

Ubuntu Security Notice USN-6463-2
Posted Dec 7, 2023
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 6463-2 - USN-6463-1 fixed vulnerabilities in Open VM Tools. This update provides the corresponding updates for Ubuntu 16.04 LTS and Ubuntu 18.04 LTS. It was discovered that Open VM Tools incorrectly handled SAML tokens. A remote attacker with Guest Operations privileges could possibly use this issue to elevate their privileges.

tags | advisory, remote, vulnerability
systems | linux, ubuntu
advisories | CVE-2023-34058, CVE-2023-34059
SHA-256 | 539ac70bca3ea1e9964c520e718612b18a18216724e5f7d39c2a37c57be262c1

Ubuntu Security Notice USN-6463-2

Change Mirror Download
==========================================================================
Ubuntu Security Notice USN-6463-2
December 06, 2023

open-vm-tools vulnerabilities
==========================================================================

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

- Ubuntu 18.04 LTS (Available with Ubuntu Pro)
- Ubuntu 16.04 LTS (Available with Ubuntu Pro)

Summary:

Several security issues were fixed in Open VM Tools.

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

Details:

USN-6463-1 fixed vulnerabilities in Open VM Tools. This update provides
the corresponding updates for Ubuntu 16.04 LTS and Ubuntu 18.04 LTS.

Original advisory details:

It was discovered that Open VM Tools incorrectly handled SAML tokens. A
remote attacker with Guest Operations privileges could possibly use this
issue to elevate their privileges. (CVE-2023-34058)

Matthias Gerstner discovered that Open VM Tools incorrectly handled file
descriptors when dropping privileges. A local attacker could possibly use
this issue to hijack /dev/uinput and simulate user inputs.
(CVE-2023-34059)

Update instructions:

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

Ubuntu 18.04 LTS (Available with Ubuntu Pro):
open-vm-tools 2:11.0.5-4ubuntu0.18.04.3+esm3
open-vm-tools-desktop 2:11.0.5-4ubuntu0.18.04.3+esm3

Ubuntu 16.04 LTS (Available with Ubuntu Pro):
open-vm-tools 2:10.2.0-3~ubuntu0.16.04.1+esm4
open-vm-tools-desktop 2:10.2.0-3~ubuntu0.16.04.1+esm4

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

References:
https://ubuntu.com/security/notices/USN-6463-2
https://ubuntu.com/security/notices/USN-6463-1
CVE-2023-34058, CVE-2023-34059

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