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CVE-2020-3952: VMware vCenter Server Information Disclosure Vulnerability

criticalknown exploitedpublic exploitCVE-2020-3952
Actively exploited. At least one CVE in this advisory is listed in the CISA Known Exploited Vulnerabilities catalog — exploitation has been observed in the wild. Treat remediation as urgent.
VMware vCenter Server contains an information disclosure vulnerability in the VMware Directory Service (vmdir) when the Platform Services Controller (PSC) does not correctly implement access controls. Successful exploitation allows an attacker with network access to port 389 to extract sensitive information.

CSIRTS triage

vendor: VMwareproduct: vCenter ServerInformation disclosure
What
VMware vCenter Server contains an information disclosure vulnerability in the VMware Directory Service.
Who is affected
Deployments of VMware vCenter Server with network access to port 389.
Urgency
Remediation is urgent due to active exploitation and critical severity.
Action
Apply the latest security updates for vCenter Server.

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Details

Source
CISA Known Exploited Vulnerabilities (US · database · site)
Severity
critical
Published
2021-11-03
Exploitation
Observed in the wild (CISA KEV)

Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2020-3952

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Referenced CVEs

CVECSIRTS overviewExternal
CVE-2020-3952coverage & exploitation statusNVD · CVE.org

Recent advisories for VMware vCenter Server

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

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