VMSA-2023-0017

• VMware Horizon Server

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

VMware Horizon Server contains a HTTP request smuggling vulnerability. VMware has evaluated the severity of this issue to be in the Moderate severity range with a maximum CVSSv3 base score of 5.3.

A malicious actor with network access may be able to perform HTTP smuggle requests.

To remediate CVE-2023-34037 apply the patches listed in the ‘Fixed Version’ column of the ‘Response Matrix’ below.

None.

None.

None.

VMware would like to thank Ricter Z, and Matt Landers of OccamSec for independently reporting this issue to us.

VMware Horizon Server contains an information disclosure vulnerability. VMware has evaluated the severity of this issue to be in the Moderate severity range with a maximum CVSSv3 base score of 5.3.

A malicious actor with network access may be able to access information relating to the internal network configuration.

To remediate CVE-2023-34038 apply the patches listed in the ‘Fixed Version’ column of the ‘Response Matrix’ below.

None.

None.

None.

VMware would like to thank Matt Landers of OccamSec for reporting this issue to us.

Fixed Versions(s) and Release Notes:
2306 https://docs.vmware.com/en/VMware-Horizon/8-2306/rn/vmware-horizon-8-2306-release-notes/index.html
2212.1 https://docs.vmware.com/en/VMware-Horizon/8-2212.1/rn/vmware-horizon-8-22121-release-notes/index.html
2209.1 https://docs.vmware.com/en/VMware-Horizon/8-2209.1/rn/vmware-horizon-8-22091-release-notes/index.html
2111.2 https://docs.vmware.com/en/VMware-Horizon/8-2111.2/rn/vmware-horizon-8-21112-release-notes/index.html

Downloads:
2306 https://customerconnect.vmware.com/en/downloads/info/slug/desktop_end_user_computing/vmware_horizon/2306
2212.1 https://customerconnect.vmware.com/en/downloads/info/slug/desktop_end_user_computing/vmware_horizon/2212
2209.1 https://customerconnect.vmware.com/en/downloads/info/slug/desktop_end_user_computing/vmware_horizon/2209
2111.2 https://customerconnect.vmware.com/en/downloads/info/slug/desktop_end_user_computing/vmware_horizon/2111

Mitre CVE Dictionary Links:
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-34037
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-34038

FIRST CVSSv3 Calculator:
CVE-2023-34037: https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
CVE-2023-34038: https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

2023-08-03: VMSA-2023-0017
Initial security advisory.

E-mail: security@vmware.com

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