VMware fixes critical RCE in VMware Cloud Foundation
Vulnerabilities mentionedAll →
| CVE | Vulnerability | CVSS | EPSS | Flags | Affected | Exposure | Published |
|---|---|---|---|---|---|---|---|
| CVE-2021-39144 | Deserialization RCE in XStream XML Library Affecting Multiple Vendors CVE-2021-39144 is a remote code execution vulnerability in XStream, a widely used Java library that serializes objects to XML and back, caused by unsafe deserialization of a manipulated input stream (CWE-502, CWE-94, CWE-306). An attacker with sufficient rights to feed crafted input into an application running an affected XStream version can trigger arbitrary type instantiation and execute commands on the host, with high impact to confidentiality, integrity and availability (CVSS 3.1: 8.5, scope changed). Only deployments relying on XStream's default blacklist configuration are affected; users who configured XStream's security framework with a whitelist limited to the minimal required types are not affected, and XStream 1.4.18 removed the vulnerable default blacklist behavior. The library is embedded in many downstream products in the data, including Debian Linux and Fedora packages, NetApp SnapManager, and numerous Oracle Communications, Commerce and Retail products, and it was exploited in VMware Cloud Foundation and NSX Manager. The flaw was added to CISA's Known Exploited Vulnerabilities catalog on 2023-03-10, is being actively exploited in the wild per current headlines, and EPSS assigns a 98.1% probability of exploitation within 30 days. Do: Upgrade XStream to 1.4.18 or later, or configure its security framework with a whitelist limited to the minimal required types; apply vendor-supplied updates for VMware Cloud Foundation/NSX Manager, Oracle, NetApp, Debian and Fedora per the CISA KEV required action. Prioritize internet-exposed VMware NSX Manager and Cloud Foundation deployments, which are being actively exploited, and audit any applications that pass untrusted XML input into XStream. | 8.5 | 98% | KEV PoC ×2 |
| masson the order of 100,000+ deployments (bundled across Oracle, NetApp, VMware, Debian and Fedora product lines) | |
| CVE-2022-31678 | VMware Cloud Foundation (NSX-V) contains an XML External Entity (XXE) vulnerability. VMware Cloud Foundation (NSX-V) contains an XML External Entity (XXE) vulnerability. On VCF 3.x instances with NSX-V deployed, this may allow a user to exploit this issue leading to a denial-of-service condition or unintended information disclosure. NVD description · AI analysis pending | 9.1 | 9% |
| — |
Full article328 words · extracted from securityaffairs.com · click to collapse
VMware addressed a critical remote code execution vulnerability in VMware Cloud Foundation tracked as CVE-2021-39144.
VMware has released security updates to address a critical vulnerability, tracked as CVE-2021-39144 (CVSSv3 9.8), in VMware Cloud Foundation. VMware Cloud Foundation™ is the industry’s most advanced hybrid cloud platform. It provides a complete set of software-defined services for compute, storage, networking, security and cloud management to run enterprise apps—traditional or containerized —in private or public environments.
The remote code execution vulnerability resides in the XStream open-source library. Unauthenticated attackers can exploit the vulnerability in low-complexity attacks without user interaction.
“Due to an unauthenticated endpoint that leverages XStream for input serialization in VMware Cloud Foundation (NSX-V), a malicious actor can get remote code execution in the context of ‘root’ on the appliance.” reads the advisory published by the company.
The product team has also released patches for end-of-life products due to the severity of the vulnerability.
The virtualization giant also addressed an XML External Entity (XXE) vulnerability tracked as CVE-2022-31678 (CVSSv3 5.3.). An unauthenticated user may exploit this issue to cause a denial-of-service condition or unintended information disclosure.
Both flaws were reported by researchers Sina Kheirkhah and Steven Seeley from Source Incite.
VMware also published separate guidance to upgrade NSX-V 6.4.14 appliances on VMware Cloud Foundation 3.x.
Below is the step-by-step workaround procedure:
Step 1: Perform below steps on each VMware NSX-V instance deployed in your VMware Cloud Foundation environment
- Apply the NSX-v 6.4.14 patch available at the Product Patch page to all NSX-V instances (Management & VI Domain) in the environment.
Step 2: Perform below steps on each SDDC Manager VM deployed in your Cloud Foundation environment
- Login to SDDC manager Virtual Machine via SSH and sudo to root account
- Verify the NSX-V version on the inventory
- API to update NSX-v hot patch version: 6.4.14-20609341
- Verify the NSX-V Version
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