CVE-2020-3952: Sensitive Information Disclosure in VMware vCenter Server (VMSA-2020-0006)
VMware patches a critical information disclosure flaw in vCenter Server with a CVSSv3 score of 10.0.
Contexte
On April 9, VMware published VMSA-2020-0006, a security advisory for a critical vulnerability in vCenter Server that received the maximum CVSSv3 score of 10.0.
Analyse
CVE-2020-3952 is a sensitive information disclosure flaw in VMware vCenter Server. The flaw resides in the VMware Directory Service (vmdir), which is included in vCenter Server as part of an embedded or external Platform Services Controller (PSC). Under “certain conditions,” vmdir does not implement proper access controls, which could allow a malicious attacker with network access to obtain sensitive information. While the advisory does not indicate what sensitive information could be obtained, VMware notes this information could be used to compromise vCenter Server or other services that use vmdir for authentication.
Démonstration de faisabilité (PoC)
At the time of this writing, no public PoC has been released for this vulnerability. Based on the CVSSv3 score of 10.0 assigned to this vulnerability, it is likely that it may be easy to exploit.
Solution
VMware released vCenter Server version 6.7u3f to address this vulnerability. The following table lists the affected versions of vCenter Server.
| Produit | Version | Plateforme | Affected | Fixed | Additional Documentation |
|---|---|---|---|---|---|
| vCenter Server | 6.7 | Appliance virtuelle | Oui | 6.7u3f | KB78543 |
| vCenter Server | 6.7 | Windows | Oui | 6.7u3f | KB78543 |
According to VMware’s advisory, the vulnerability only affects specific versions of vCenter Server versions 6.7. Specifically, those instances where vCenter Server was upgraded from a previous version, including version 6.0 or 6.5. A new and clean installation of vCenter Server 6.7 is not affected.
VMware has published KB article 78543 with additional guidance to determine if a vCenter Server 6.7 deployment is affected.
Identification des systèmes affectés
A list of Tenable plugins to identify this vulnerability will appear here as they’re released.
Où trouver plus d'informations
- VMware VMSA-2020-0006 Security Advisory
- VMware KB 78543: Additional Documentation for VMSA-2020-0006
Rejoignez l'équipe SRT de Tenable sur Tenable Community.
Apprenez-en plus sur Tenable, la première plateforme de Cyber Exposure qui vous permet de gérer votre surface d'attaque moderne de manière globale.
Profitez d'un essai gratuit de 30 jours de Tenable.io Vulnerability Management.
Articles connexes
Microsoft’s January 2022 Patch Tuesday Addresses 97 CVEs (CVE-2022-21907)
Microsoft addresses 97 CVEs in its January 2022 Patch Tuesday release, including four zero-day vulnerabilities that were publicly disclosed but not exploited in the wild. 9Critical 88Important...
CVE-2021-44228, CVE-2021-45046, CVE-2021-4104: Frequently Asked Questions About Log4Shell and Associated Vulnerabilities
A list of frequently asked questions related to Log4Shell and associated vulnerabilities.
