Security Experts:

Connect with us

Hi, what are you looking for?



VMware Plugs Critical Carbon Black App Control Flaw

VMware issues a critical fix for a vulnerability that allows hacker to gain full access to the underlying server operating system.


Virtualization technology giant VMware on Tuesday pushed out a major security fix to cover a critical vulnerability in its enterprise-facing Carbon Black App Control product.

A critical-severity advisory from VMware tracks the vulnerability as CVE-2023-20858 and warns that hackers can launch injection exploits to gain full access to the underlying server operating system.

“A malicious actor with privileged access to the App Control administration console may be able to use specially crafted input allowing access to the underlying server operating system,” VMware warned.

The vulnerability, which carries a CVSS severity score of 9.1 out of 10, affects App Control versions 8.7.x, 8.8.x and 8.9.x running on Microsoft’s Windows operating system.

The company said the issue was privately reported by Jari Jääskelä, a security researcher active on the HackerOne bug bounty platform.

VMware Carbon Black App Control is a security product used by enterprise defenders to ensure that only trusted and approved software is allowed to execute on critical systems and endpoints.

VMware also issued an important-severity advisory to warn of a privilege escalation and information disclosure flaw in its vRealize Orchestrator product. 

“A malicious actor, with non-administrative access to vRealize Orchestrator, may be able to use specially crafted input to bypass XML parsing restrictions leading to access to sensitive information or possible escalation of privileges,” the company said.

Related: Gaping Authentication Bypass Holes in VMware Workspace One

Related: VMware Says No Evidence of Zero-Day Exploits in ESXi Ransomware Attacks

Related: VMware Patches VM Escape Flaw Exploited at Geekpwn Event

Written By

Ryan Naraine is Editor-at-Large at SecurityWeek and host of the popular Security Conversations podcast series. He is a security community engagement expert who has built programs at major global brands, including Intel Corp., Bishop Fox and GReAT. Ryan is a founding-director of the Security Tinkerers non-profit, an advisor to early-stage entrepreneurs, and a regular speaker at security conferences around the world.

Click to comment

Daily Briefing Newsletter

Subscribe to the SecurityWeek Email Briefing to stay informed on the latest threats, trends, and technology, along with insightful columns from industry experts.

Join this webinar to learn best practices that organizations can use to improve both their resilience to new threats and their response times to incidents.


Join this live webinar as we explore the potential security threats that can arise when third parties are granted access to a sensitive data or systems.


Expert Insights

Related Content


Less than a week after announcing that it would suspended service indefinitely due to a conflict with an (at the time) unnamed security researcher...

Risk Management

The supply chain threat is directly linked to attack surface management, but the supply chain must be known and understood before it can be...


Apple has released updates for macOS, iOS and Safari and they all include a WebKit patch for a zero-day vulnerability tracked as CVE-2023-23529.


Patch Tuesday: Microsoft warns vulnerability (CVE-2023-23397) could lead to exploitation before an email is viewed in the Preview Pane.

Application Security

Drupal released updates that resolve four vulnerabilities in Drupal core and three plugins.

Cloud Security

VMware vRealize Log Insight vulnerability allows an unauthenticated attacker to take full control of a target system.

IoT Security

Lexmark warns of a remote code execution (RCE) vulnerability impacting over 120 printer models, for which PoC code has been published.

Application Security

A CSRF vulnerability in the source control management (SCM) service Kudu could be exploited to achieve remote code execution in multiple Azure services.