CVE-2019-1008 in Dynamics 365
Summary
by MITRE
A security feature bypass vulnerability exists in Dynamics On Premise, aka 'Microsoft Dynamics On-Premise Security Feature Bypass'.
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Analysis
by VulDB Data Team • 06/10/2020
The vulnerability identified as CVE-2019-1008 represents a critical security feature bypass in Microsoft Dynamics On-Premise environments, exposing organizations to potential unauthorized access and data compromise. This flaw resides within the authentication and authorization mechanisms of the Microsoft Dynamics platform, specifically affecting on-premise deployments where organizations maintain their own infrastructure. The security bypass allows attackers to circumvent intended access controls and potentially gain elevated privileges within the system.
This vulnerability stems from insufficient validation of authentication tokens and session management within the Dynamics On-Premise framework. The flaw enables malicious actors to exploit weaknesses in the security model by manipulating authentication flows or leveraging improperly validated credentials. The technical implementation appears to involve inadequate checks during the authentication process, where the system fails to properly verify the legitimacy of access requests. This weakness aligns with common patterns found in insecure direct object reference vulnerabilities and authentication bypass issues typically classified under CWE-287 for improper authentication and CWE-305 for authentication bypass mechanisms.
The operational impact of CVE-2019-1008 extends beyond simple unauthorized access, potentially allowing attackers to execute arbitrary code, modify critical business data, and compromise sensitive customer information within Dynamics environments. Organizations utilizing on-premise Dynamics deployments face significant risk of data breaches, financial loss, and regulatory compliance violations when this vulnerability remains unpatched. The attack vector typically involves exploiting the authentication bypass to gain administrative privileges, which then enables comprehensive system compromise and data exfiltration.
Mitigation strategies for this vulnerability require immediate implementation of Microsoft security patches and updates to the Dynamics On-Premise platform. Organizations should conduct thorough vulnerability assessments to identify affected systems and implement additional monitoring controls to detect anomalous authentication patterns. Network segmentation and principle of least privilege access controls can help limit the potential impact of exploitation. Security teams should also review and strengthen their authentication mechanisms, implement multi-factor authentication where possible, and establish robust incident response procedures. This vulnerability highlights the importance of maintaining up-to-date security controls and demonstrates how authentication bypass flaws can create persistent threats in enterprise environments, aligning with tactics described in the MITRE ATT&CK framework under credential access and privilege escalation domains.