CVE-2022-23259 in Dynamics 365
Summary
by MITRE • 04/15/2022
Microsoft Dynamics 365 (on-premises) Remote Code Execution Vulnerability.
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Analysis
by VulDB Data Team • 04/17/2022
Microsoft Dynamics 365 on-premises installations contain a critical remote code execution vulnerability that stems from improper input validation within the web application layer. This flaw exists in the way the system processes certain HTTP requests and validates user-supplied data, creating an avenue for unauthenticated attackers to execute arbitrary code on affected servers. The vulnerability manifests when the application fails to properly sanitize input parameters that are subsequently used in dynamic code generation or command execution contexts, allowing attackers to inject malicious payloads that bypass authentication mechanisms and directly manipulate the underlying operating system.
The technical exploitation of this vulnerability follows a pattern consistent with command injection attacks and aligns with CWE-77 and CWE-94 categories, where insufficient input sanitization leads to arbitrary code execution. Attackers can leverage this weakness by crafting specially formatted HTTP requests that contain malicious payloads designed to exploit the vulnerable input handling mechanisms. The vulnerability affects Microsoft Dynamics 365 versions prior to the security updates released in February 2022, specifically impacting organizations running on-premises deployments without proper patch management protocols. This represents a significant risk to enterprise environments where Dynamics 365 serves as a critical business application handling sensitive customer data and financial transactions.
The operational impact of this vulnerability extends beyond simple code execution, as it provides attackers with persistent access to corporate networks through the Dynamics 365 application layer. Once exploited, attackers can establish backdoors, escalate privileges, and move laterally within the network infrastructure. The attack surface is particularly concerning for organizations with inadequate network segmentation, as the compromised Dynamics 365 instance can serve as a launching point for broader network infiltration. This vulnerability also poses risks to compliance frameworks such as pci dss and gdpr, as unauthorized access to customer data and business-critical information could result in significant regulatory penalties and reputational damage.
Organizations should implement immediate mitigations including applying the relevant security patches released by Microsoft, which address the input validation flaws in the web application components. Network segmentation strategies should be enforced to limit access to Dynamics 365 servers, while implementing web application firewalls to monitor and filter suspicious traffic patterns. The vulnerability aligns with several ATT&CK techniques including T1059 for command and scripting interpreter and T1078 for valid accounts, as attackers can leverage the compromised system to maintain persistence and establish footholds within enterprise environments. Additionally, organizations should conduct comprehensive security assessments to identify any potential exploitation attempts and implement robust monitoring solutions to detect anomalous behavior in their Dynamics 365 deployments.