CVE-2019-8963 in EcoStruxure Power Monitoring Expert
Summary
by MITRE • 03/30/2023
A Denial of Service (DoS) vulnerability was discovered in FlexNet Publisher's lmadmin 11.16.5, when doing a crafted POST request on lmadmin using the web-based tool.
If you want to get the best quality for vulnerability data then you always have to consider VulDB.
Analysis
by VulDB Data Team • 02/19/2025
The vulnerability identified as CVE-2019-8963 represents a critical denial of service weakness within FlexNet Publisher's lmadmin 11.16.5 web administration interface. This flaw specifically manifests when the system processes crafted POST requests through the web-based management tool, potentially allowing malicious actors to disrupt normal service operations. The vulnerability resides in the input validation mechanisms of the lmadmin component, which fails to properly handle malformed or specially constructed request data. Attackers can exploit this weakness by sending carefully crafted HTTP POST requests that trigger unexpected behavior in the application's processing logic, leading to service interruption or complete system unavailability.
The technical implementation of this vulnerability stems from inadequate sanitization and validation of user-supplied data within the lmadmin web interface. When the system receives a malicious POST request, it processes the input without sufficient checks, causing the application to enter an unrecoverable state or consume excessive system resources. This type of vulnerability falls under CWE-400, which categorizes improper input validation as a fundamental weakness in application security. The flaw demonstrates characteristics of a resource exhaustion attack pattern where the crafted requests can cause the web server or application process to consume all available memory, CPU cycles, or other critical system resources, effectively rendering the service inaccessible to legitimate users.
From an operational impact perspective, this vulnerability poses significant risks to organizations relying on FlexNet Publisher for software license management. The denial of service condition can disrupt license validation processes, preventing legitimate users from accessing licensed software applications. This disruption can cascade into broader business operations, particularly in environments where license management is critical for software deployment and usage tracking. The vulnerability affects the availability aspect of the CIA triad, compromising the system's ability to provide continuous service to authorized users. Security teams must consider that this weakness could be exploited as part of a larger attack campaign, potentially serving as a precursor to more sophisticated attacks that could leverage the service disruption to gain additional system access.
Mitigation strategies for CVE-2019-8963 should prioritize immediate patch application from FlexNet Publisher, as this represents the most effective solution to address the root cause of the vulnerability. Organizations should implement network-level controls including web application firewalls and access control lists to filter suspicious POST requests before they reach the lmadmin interface. The implementation of rate limiting mechanisms can help prevent abuse of the vulnerable endpoint by limiting the number of requests that can be processed within a given time period. Additionally, security monitoring should be enhanced to detect unusual patterns of POST requests that may indicate exploitation attempts. Organizations should also consider isolating the lmadmin interface in a restricted network segment and implementing multi-factor authentication for administrative access to reduce the attack surface. These defensive measures align with ATT&CK framework techniques related to defense evasion and privilege escalation, as they address potential exploitation pathways that attackers might use to gain further access to the system. Regular security assessments and vulnerability scanning should be conducted to identify similar weaknesses in other components of the software stack that might present analogous vulnerabilities.