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Critical Command Injection Vulnerability Found in Aviatrix Network Controller (CVE-2024-50603)

 


Jakub Korepta, Principal Security Consultant at Securing, has discovered a critical command injection vulnerability in the Aviatrix Network Controller, identified as CVE-2024-50603. This flaw, impacting versions 7.x through 7.2.4820, has been assigned the highest possible CVSS severity score of 10.0. It allows unauthenticated attackers to remotely execute arbitrary code, posing a severe threat to enterprises utilizing Aviatrix’s cloud networking solutions.

The root of this vulnerability lies in improper input handling within the Aviatrix Controller's API. While certain input parameters are sanitized using functions like escapeshellarg, others—most notably the cloud_type parameter in the list_flightpath_destination_instances action—remain unprotected. This oversight permits attackers to inject malicious commands into API requests, leading to remote code execution (RCE).

Jakub Korepta demonstrated this flaw by crafting a malicious HTTP request that redirected sensitive system files to an attacker-controlled server. By appending harmful commands to the vulnerable parameter, attackers can gain unauthorized access and execute arbitrary code on the targeted system.


In a proof-of-concept attack, Korepta successfully extracted the contents of the /etc/passwd file, highlighting the potential for data theft. However, the threat extends beyond data exfiltration. Exploiting this vulnerability could allow attackers to:
  • Execute Remote Code: Attackers can run commands with full system privileges, gaining complete control over the Aviatrix Controller.
  • Steal or Manipulate Data: Sensitive data stored on the system can be accessed, stolen, or altered.
  • Compromise Entire Networks: Successful exploitation could lead to lateral movement within enterprise networks, escalating the attack's impact.

Research uncovered 681 publicly exposed Aviatrix Controllers accessible via the Shodan search engine. These exposed systems significantly increase the risk, providing attackers with easily identifiable targets for exploitation.

Aviatrix has responded promptly by releasing version 7.2.4996, which addresses this vulnerability through enhanced input sanitization. This update effectively neutralizes the identified risk. All users are strongly urged to upgrade to this patched version immediately to secure their systems and prevent exploitation. Failure to apply this update leaves systems vulnerable to severe attacks.

Recommended actions for organizations include:
  • Immediate Patch Deployment: Upgrade to version 7.2.4996 or later to eliminate the vulnerability.
  • Network Access Controls: Restrict public access to Aviatrix Controllers and enforce strict network segmentation.
  • Continuous Monitoring: Implement robust monitoring systems to detect unauthorized activity or anomalies.

Lessons in Proactive Security

This incident underscores the critical need for proactive cybersecurity measures and routine software updates. Even advanced networking solutions can be compromised if proper input validation and security controls are neglected. Organizations must remain vigilant, ensuring that both internal systems and third-party solutions adhere to stringent security standards.

The discovery of CVE-2024-50603 serves as a stark reminder of how overlooked vulnerabilities can escalate into significant threats. Timely updates and consistent security practices are vital to protecting enterprise networks from evolving cyber risks.

Businesses Rely on Multicloud Security to Protect Cloud Workloads


On Thursday, cloud networking company Aviatrix unveiled its new Distribution Cloud Firewall security platform, which integrates traffic inspection and policy enforcement across multicloud environment.

According to Rod Stuhlmuller, VP of solutions marketing at Aviatrix, the company utilizes native cloud platform features and its own technology to give businesses a centralized look into the security of their cloud workloads and the flexibility to send out the same guidelines to different clouds.

"The architecture is really what's new, not necessarily the capabilities of each of the features[…]It's very different than having to reroute traffic to some centralized inspection point for whatever security capabilities you're talking about — that just becomes very complex and expensive to do," he said.

According to a survey by Flexera, “Flexera 2023 State of the Cloud Report,” a vast majority of companies (87%) have switched to a multicloud architecture, with the majority (72%) adopting a hybrid strategy that integrates both private cloud infrastructure and public cloud services. According to Flexera, managing multicloud architectures and securing cloud infrastructure are among the top concerns for businesses, with 80% and 78% of them grappling, respectively.

Security may suffer if businesses distribute workloads among numerous cloud service providers (CSPs). According to Patrick Coughlin, vice president of technical go-to-market for Splunk, a data and insights cloud platform, companies may rapidly lose visibility into the security of their cloud infrastructure because CSPs handle security policies, traffic inspection, and workload deployment differently.

The Multicloud Security Mess

Initially, many providers built virtual versions of their firewall appliances and used them as entry points to cloud infrastructure, but John Grady, principal analyst for cybersecurity at Enterprise Strategy Group, says that managing those virtual firewalls has gotten harder, especially when using multiple cloud platforms.

"Virtual firewall instances have been around for a while, but there's been an acknowledgement over the last couple of years that these deployments can be complex and cumbersome and don't take advantage of the key benefits the cloud offers[…] we've seen a general shift toward more cloud-native network security solutions," says Stuhlmuller.

Finding a solution to the expanding complexity is essential as more enterprises use numerous infrastructure-as-a-service (IaaS) solutions from the leading cloud providers, Amazon Web Services (AWS), Microsoft Azure, and Google Cloud Platform (GCP).

By employing their native security groups, Aviatrix, for instance, enables businesses to develop an abstracted policy that can be applied across all cloud platforms without the administrator having to visit each one. The number of containers and virtual machines that need to be upgraded for businesses with expanding workloads, driven by microservice-based software architecture, can soar, according to Stuhlmuller.

"It's not that we're putting firewalls everywhere, but we're putting the inspection and enforcement capability into the network into the natural path of traffic, with a [single management console] that allows us to do central creation of policy but push that distributed inspection enforcement out everywhere in the network," he says.

Forrester Research lists Palo Alto Networks, Trellix, Trend Micro, Rapid7, and Check Point Software Technologies as additional significant vendors that concentrate on cloud workload security, but with various approaches to the technologies.