CVE-2023-34038 — VMware Horizon Server contains an information disclosure vulnerability

VMware Horizon Server contains an information disclosure vulnerability. A malicious actor with network access may be able to access information relating to the internal network configuration.

01What is this vulnerability?

VMware Horizon Server contains an information disclosure vulnerability. A malicious actor with network access may be able to access information relating to the internal network configuration.

02Affected products

Vendor	Product	Versions
n	a / VMware Horizon Server	Horizon Server 2306, Horizon Server 2303, Horizon Server 2212, Horizon Server 2209, Horizon Server 2206, Horizon Server 2111.x, Horizon Server 2106, Horizon Server 2103, Horizon Server 2012, Horizon Server 2006

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2023-08-04T11:24:57.885Z
• Last modified: 2024-08-02T15:54:14.136Z

09References

• www.vmware.com — https://www.vmware.com/security/advisories/VMSA-2023-0017.html