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VMware Security Solutions  Advisories  VMSA-2023-0024



Important

Advisory ID: VMSA-2023-0024
CVSSv3 Range: 7.5 - 7.8
Issue Date: 2023-10-26
Updated On: 2023-10-26 (Initial Advisory)
CVE(s): CVE-2023-34057, CVE-2023-34058
Synopsis: VMware Tools updates address Local Privilege Escalation and SAML Token
Signature Bypass vulnerabilities (CVE-2023-34057, CVE-2023-34058)

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1. IMPACTED PRODUCTS

 * VMware Tools

2. INTRODUCTION

Multiple vulnerabilities in VMware Tools were responsibly reported to VMware.
Updates are available to remediate these vulnerabilities in affected VMware
products.

3A. LOCAL PRIVILEGE ESCALATION VULNERABILITY IN VMWARE TOOLS (MACOS)
(CVE-2023-34057)

Description

VMware Tools contains a local privilege escalation vulnerability. VMware has
evaluated the severity of this issue to be in the Important severity range with
a maximum CVSSv3 base score of 7.8.

Known Attack Vectors

A malicious actor with local user access to a guest virtual machine may elevate
privileges within the virtual machine.

Resolution

To remediate CVE-2023-34057 apply the patches listed in the 'Fixed Version'
column of the 'Response Matrix' found below.

Workarounds

None.

Additional Documentation

None.

Notes

None.

Acknowledgements

VMware would like to thank Dan Revah of Google for reporting this issue to us.

3B. SAML TOKEN SIGNATURE BYPASS VULNERABILITY IN VMWARE TOOLS (CVE-2023-34058)

Description

VMware Tools contains a SAML token signature bypass vulnerability. VMware has
evaluated the severity of this issue to be in the Important severity range with
a maximum CVSSv3 base score of 7.5.

Known Attack Vectors

A malicious actor that has been granted Guest Operation Privileges in a target
virtual machine may be able to elevate their privileges if that target virtual
machine has been assigned a more privileged Guest Alias.

Resolution

To remediate CVE-2023-34058 apply the patches listed in the 'Fixed Version'
column of the 'Response Matrix' found below.

Workarounds

None.

Additional Documentation

None.

Notes

 * While the description and known attack vectors are very similar to
   CVE-2023-20900, CVE-2023-34058 has a different root cause that has now been
   addressed.
 * CVE-2023-34058 also impacts open-vm-tools. Fixes have been provided to the
   Linux community for distribution.

Response Matrix

Product Version Running On CVE Identifier CVSSv3 Severity Fixed Version
Workarounds Additional Documentation
VMware Tools
12.x.x, 11.x.x, 10.3.x
macOS
CVE-2023-34057
7.8
important
12.1.1
None
None
VMware Tools
12.x.x, 11.x.x, 10.3.x
Windows
CVE-2023-34057
N/A
N/A
Unaffected
N/A
N/A
VMware Tools
12.x.x, 11.x.x, 10.3.x
macOS
CVE-2023-34058
N/A
N/A
Unaffected
N/A
N/A
VMware Tools
12.x.x, 11.x.x, 10.3.x
Windows
CVE-2023-34058
7.5
important
12.3.5
None
None

4. REFERENCES

Fixed Version(s) and Release Notes:

VMware Tools 12.3.5 (Windows)
Downloads and Documentation:
https://customerconnect.vmware.com/en/downloads/details?downloadGroup=VMTOOLS1235&productId=1259&rPId=112353
https://docs.vmware.com/en/VMware-Tools/12.3/rn/vmware-tools-1235-release-notes/index.html

VMware Tools 12.1.1 (macOS)
Downloads and Documentation:
https://customerconnect.vmware.com/en/downloads/details?downloadGroup=VMTOOLS1235&productId=1259&rPId=112353
https://docs.vmware.com/en/VMware-Tools/12.3/rn/vmware-tools-1235-release-notes/index.html

Mitre CVE Dictionary Links
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-34057
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-34058


FIRST CVSSv3 Calculator
CVE-2023-34057:
https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVE-2023-34058:
https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

5. CHANGE LOG

2023-10-26 VMSA-2023-0024
Initial security advisory.

6. CONTACT

E-mail: security@vmware.com

PGP key at:
https://kb.vmware.com/kb/1055 

VMware Security Advisories
https://www.vmware.com/security/advisories 

VMware Security Response Policy
https://www.vmware.com/support/policies/security_response.html 

VMware Lifecycle Support Phases
https://www.vmware.com/support/policies/lifecycle.html 

VMware Security & Compliance Blog  
https://blogs.vmware.com/security 

Twitter
https://twitter.com/VMwareSRC


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