Moderate
1. Impacted Products
- VMware Horizon Server
2. Introduction
Multiple vulnerabilities in VMware Horizon Server were responsibly reported to VMware. Updates are available to remediate these vulnerabilities in affected VMware products.
3a. Request smuggling vulnerability (CVE-2023-34037)
Description
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.
Known Attack Vectors
A malicious actor with network access may be able to perform HTTP smuggle requests.
Resolution
To remediate CVE-2023-34037 apply the patches listed in the 'Fixed Version' column of the 'Response Matrix' below.
Workarounds
None.
Additional Documentation
None.
Notes
None.
Acknowledgements
VMware would like to thank Ricter Z, and Matt Landers of OccamSec for independently reporting this issue to us.
3b. Information disclosure vulnerability (CVE-2023-34038)
Description
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.
Known Attack Vectors
A malicious actor with network access may be able to access information relating to the internal network configuration.
Resolution
To remediate CVE-2023-34038 apply the patches listed in the 'Fixed Version' column of the 'Response Matrix' below.
Workarounds
None.
Additional Documentation
None.
Notes
None.
Acknowledgements
VMware would like to thank Matt Landers of OccamSec for reporting this issue to us.
Response Matrix
| Product | Version | Running On | CVE Identifier | CVSSv3 | Severity | Fixed Version | Workarounds | Additional Documentation |
|
VMware Horizon Server
|
2306
|
Any
|
N/A
|
N/A
|
N/A
|
Unaffected
|
N/A
|
N/A
|
|
VMware Horizon Server
|
2303
|
Any
|
CVE-2023-34037, CVE-2023-34038
|
moderate
|
None
|
None
|
||
|
VMware Horizon Server
|
2212
|
Any
|
CVE-2023-34037, CVE-2023-34038
|
moderate
|
None
|
None
|
||
|
VMware Horizon Server
|
2209, 2206
|
Any
|
CVE-2023-34037, CVE-2023-34038
|
moderate
|
None
|
None
|
||
|
VMware Horizon Server
|
2111.x, 2106, 2103, 2012, 2006
|
Any
|
CVE-2023-34037, CVE-2023-34038
|
moderate
|
None
|
None
|
4. References
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
5. Change Log
2023-08-03: VMSA-2023-0017
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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