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Critical

Advisory ID: VMSA-2023-0026
CVSSv3 Range: 9.8
Issue Date: 2023-11-14
Updated On: 2023-11-14 (Initial Advisory)
CVE(s): CVE-2023-34060
Synopsis: VMware Cloud Director Appliance contains an authentication bypass
vulnerability (CVE-2023-34060).

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1. IMPACTED PRODUCTS

 * VMware Cloud Director Appliance (VCD Appliance)

2. INTRODUCTION

An authentication bypass vulnerability in VMware Cloud Director Appliance was
privately reported to VMware. Updates are available to remediate this
vulnerability in the affected VMware product.

3. AUTHENTICATION BYPASS VULNERABILITY (CVE-2023-34060)

Description

VMware Cloud Director Appliance contains an authentication bypass vulnerability
in case VMware Cloud Director Appliance was upgraded to 10.5 from
an older version. VMware has evaluated the severity of this issue to be in
the Critical severity range with a maximum CVSSv3 base score of 9.8.

Known Attack Vectors

On an upgraded version of VMware Cloud Director Appliance 10.5, a malicious
actor with network access to the appliance can bypass login
restrictions when authenticating on port 22 (ssh) or port 5480 (appliance
management console). This bypass is not present on port 443 (VCD provider
and tenant login). On a new installation of VMware Cloud Director Appliance
10.5, the bypass is not present.

Resolution

To remediate CVE-2023-34060 follow the guidance mentioned in KB95534 in the
'Fixed Version' column of the 'Response Matrix' found below.  

Workarounds

None.

Additional Documentation

None.

Notes

Only deployments that have upgraded to 10.5 from an older release are impacted
by CVE-2023-34060. New deployments of 10.5 are not impacted by CVE-2023-34060. 

VMware Cloud Director Appliance is impacted since it uses a version of sssd from
the underlying Photon OS that is affected by
CVE-2023-34060: https://github.com/vmware/photon/wiki/security-advisory-CVE-2023-34060

VMware has determined other appliances to not be impacted by this
vulnerability. 

Acknowledgements

VMware would like to thank Dustin Hartle from Ideal Integrations Inc for
reporting this issue to us.

Response Matrix

Product Version Running On CVE Identifier CVSSv3 Severity Fixed Version
Workarounds Additional Documentation
VMware Cloud Director Appliance
10.5 if upgraded from 10.4.x or below.
Photon OS
CVE-2023-34060
9.8
critical
KB95534
N/A
None
VMware Cloud Director Appliance
10.5 new install
Photon OS
CVE-2023-34060
N/A
N/A
Unaffected
N/A
None
VMware Cloud Director Appliance
10.4.x and Below
Photon OS
CVE-2023-34060
N/A
N/A
Unaffected
N/A
None

4. REFERENCES

Fixed Version(s) and Release Notes:

KB95534

Photon Security
Advisory: https://github.com/vmware/photon/wiki/security-advisory-CVE-2023-34060

Mitre CVE Dictionary Links:

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-34060

FIRST CVSSv3 Calculator:
CVE-2023-34060: https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

5. CHANGE LOG

2023-11-14 VMSA-2023-0026
Initial security advisory.

6. CONTACT

E-mail: security@vmware.com


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