Moderate
VMSA-2023-0017
5.3
2023-08-03
2023-08-03 (Initial Advisory)
CVE-2023-34037, CVE-2023-34038
VMware Horizon Server updates address multiple security vulnerabilities (CVE-2023-34037, CVE-2023-34038)
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
5. Change Log
2023-08-03: VMSA-2023-0017
Initial security advisory.
6. Contact
E-mail: security@vmware.com
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VMware Security Response Policy
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VMware Security & Compliance Blog
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