CVE-2022-41835 in F5OS-A
Summary
by MITRE • 10/20/2022
In F5OS-A version 1.x before 1.1.0 and F5OS-C version 1.x before 1.5.0, excessive file permissions in F5OS allows an authenticated local attacker to execute limited set of commands in a container and impact the F5OS controller.
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Analysis
by VulDB Data Team • 11/18/2022
The vulnerability identified as CVE-2022-41835 affects F5OS-A and F5OS-C operating systems, specifically targeting versions prior to 1.1.0 and 1.5.0 respectively. This issue represents a significant security weakness in the privilege management and access control mechanisms of these network operating systems. The vulnerability stems from improper file permission configurations that create an exploitable path for authenticated local attackers to gain elevated privileges within containerized environments. The affected systems are commonly deployed in enterprise network infrastructure, particularly within load balancing and application delivery controller deployments where F5's proprietary operating systems provide core networking services. These platforms are critical components in modern data center architectures, making the exploitation of such vulnerabilities particularly concerning from a cybersecurity perspective.
The technical flaw manifests through excessive file permissions that allow an authenticated user with local access to execute specific commands within containerized application environments. This privilege escalation occurs through container escape mechanisms that leverage the improperly configured file permissions to access restricted system resources. The vulnerability specifically impacts the F5OS controller component, which serves as the central management and control plane for the operating system. Attackers can exploit this weakness to execute limited but potentially impactful commands that may allow them to manipulate containerized services, access sensitive configuration data, or potentially escalate privileges further within the system. The container-based execution environment creates a unique attack surface where traditional host-based security controls may not be sufficient to prevent exploitation. This issue falls under the category of privilege escalation vulnerabilities, specifically addressing weak access control mechanisms that should prevent unauthorized code execution in restricted environments.
The operational impact of this vulnerability extends beyond simple privilege escalation to potentially compromise the entire network infrastructure managed by F5OS platforms. An attacker who successfully exploits this vulnerability could gain unauthorized access to critical network services, manipulate load balancing configurations, or access sensitive operational data. The limited nature of the executed commands suggests that while the immediate impact may appear constrained, the vulnerability provides a foothold for more extensive attacks. Network administrators and security teams face the challenge of identifying and mitigating this vulnerability across potentially numerous F5OS installations within their environments. The vulnerability affects both F5OS-A and F5OS-C platforms, indicating a systemic issue in the permission model implementation that requires comprehensive remediation across affected product lines. Organizations relying on these platforms for critical network services must prioritize patching and remediation efforts to prevent potential exploitation.
Mitigation strategies for CVE-2022-41835 focus on upgrading to the patched versions of F5OS-A 1.1.0 and F5OS-C 1.5.0, which address the excessive file permission configurations. Security teams should implement comprehensive network monitoring to detect unauthorized local access attempts and privilege escalation activities. Regular security audits of file permissions and access controls within F5OS environments are essential to identify potential misconfigurations that could lead to similar vulnerabilities. The implementation of principle of least privilege controls and regular permission reviews should be enforced across all F5OS deployments. Organizations should also consider implementing additional security controls such as intrusion detection systems and privileged access management solutions to detect and prevent exploitation attempts. This vulnerability demonstrates the importance of proper access control implementation in containerized environments and aligns with common attack patterns described in the MITRE ATT&CK framework under privilege escalation techniques. The issue also corresponds to CWE-276, which addresses improper file permissions, highlighting the fundamental security principle that access controls must be properly configured to prevent unauthorized system access and privilege escalation.