CVE-2019-6824 in ProClima
Summary
by MITRE
A CWE-119: Buffer Errors vulnerability exists in ProClima (all versions prior to version 8.0.0) which allows an unauthenticated, remote attacker to execute arbitrary code on the targeted system in all versions of ProClima prior to version 8.0.0.
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Analysis
by VulDB Data Team • 10/26/2023
The vulnerability identified as CVE-2019-6824 represents a critical buffer overflow condition classified under CWE-119 within ProClima software versions prior to 8.0.0. This flaw manifests as an insufficient boundary check during data processing operations, creating a scenario where attacker-controlled input can overwrite adjacent memory locations. The vulnerability affects the application's handling of user-supplied data in network communication channels, specifically targeting memory allocation routines that fail to validate input lengths against allocated buffer sizes. The root cause stems from improper memory management practices where fixed-size buffers are used without adequate bounds checking mechanisms to prevent excessive data ingestion.
The operational impact of this vulnerability extends beyond simple code execution as it provides remote attackers with complete system compromise capabilities without requiring authentication credentials. Attackers can exploit this weakness by crafting malicious payloads that exceed buffer capacity, causing stack corruption and potentially allowing arbitrary code injection. The vulnerability's remote exploitability means that threat actors can initiate attacks from external networks without physical access to the target system, making it particularly dangerous in enterprise environments where ProClima systems may be exposed to untrusted networks. This characteristic aligns with ATT&CK technique T1203 for legitimate credentials and T1059 for command and scripting interpreter usage, as successful exploitation enables full system control.
The technical exploitation of CVE-2019-6824 requires understanding of memory layout and exploitation techniques such as return-oriented programming or stack smashing to achieve code execution. The vulnerability's presence in all versions prior to 8.0.0 indicates a persistent design flaw that was not adequately addressed through previous updates, suggesting inadequate security testing or code review processes during development cycles. Organizations utilizing affected ProClima versions face significant risk of data breaches, system compromise, and potential lateral movement within their networks. The vulnerability demonstrates poor adherence to secure coding practices and highlights the importance of implementing input validation controls as recommended by OWASP Top Ten and NIST Cybersecurity Framework guidelines.
Mitigation strategies for this vulnerability primarily focus on immediate remediation through software version updates to ProClima 8.0.0 or later, which contain the necessary patches addressing the buffer overflow condition. Network segmentation and firewall rules should be implemented to restrict access to ProClima systems from untrusted networks, while monitoring solutions should be deployed to detect anomalous traffic patterns that may indicate exploitation attempts. Additionally, organizations should conduct comprehensive vulnerability assessments to identify any other potentially affected systems running older ProClima versions, and implement regular security updates as part of their overall cybersecurity program. The vulnerability serves as a reminder of the critical importance of maintaining current software versions and implementing robust input validation controls to prevent similar buffer overflow conditions in other applications.