CVE-2024-8923 in Now Platform
Summary
by MITRE • 10/29/2024
ServiceNow has addressed an input validation vulnerability that was identified in the Now Platform. This vulnerability could enable an unauthenticated user to remotely execute code within the context of the Now Platform. ServiceNow deployed an update to hosted instances and ServiceNow provided the update to our partners and self-hosted customers. Further, the vulnerability is addressed in the listed patches and hot fixes.
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Analysis
by VulDB Data Team • 10/29/2024
The vulnerability identified as CVE-2024-8923 represents a critical input validation flaw within ServiceNow's Now Platform that exposes organizations to significant remote code execution risks. This vulnerability specifically affects the platform's handling of user inputs and lacks proper sanitization mechanisms, creating an attack vector that allows unauthenticated adversaries to execute arbitrary code on affected systems. The flaw demonstrates a fundamental weakness in the platform's security architecture, particularly in how it processes external inputs that should be rigorously validated before being processed by the system's core components.
From a technical perspective, this vulnerability operates through improper input validation controls that fail to adequately sanitize or filter user-supplied data before it is processed by the Now Platform's backend services. The lack of robust input validation creates a pathway for malicious actors to inject crafted payloads that can be executed within the platform's execution context, effectively elevating their privileges from unauthenticated access to full system control. This type of vulnerability aligns with CWE-20, which specifically addresses "Improper Input Validation" as a critical weakness in software systems. The attack surface is particularly concerning given that the vulnerability allows unauthenticated exploitation, meaning that adversaries do not require valid credentials to attempt the attack.
The operational impact of CVE-2024-8923 extends far beyond simple data compromise, as remote code execution capabilities enable attackers to establish persistent access, escalate privileges, and potentially move laterally within affected networks. Organizations running ServiceNow platforms are at risk of complete system compromise, data exfiltration, and disruption of critical business operations. The vulnerability's presence in both hosted and self-hosted environments means that organizations cannot rely on ServiceNow's security measures alone, as they must also ensure their own patch management processes are effective. This vulnerability particularly impacts the platform's availability, integrity, and confidentiality, creating a triad of security concerns that organizations must address immediately.
ServiceNow's response to this vulnerability demonstrates proper incident response procedures through the deployment of patches and hot fixes for both hosted instances and self-hosted customers. The vendor's proactive approach in addressing the issue shows awareness of the severity and potential impact on their customer base. Organizations should prioritize applying these patches immediately, as the window of opportunity for exploitation remains open until the update is implemented. The remediation process should include thorough testing of the patches in non-production environments to ensure compatibility with existing customizations and integrations. Additionally, organizations should implement monitoring solutions to detect potential exploitation attempts and establish incident response procedures specifically tailored to address this type of vulnerability. The vulnerability's classification under ATT&CK technique T1059.001 for command and scripting interpreter highlights the importance of implementing network segmentation and access controls to limit potential lateral movement if exploitation occurs.