CVE-2024-7093 in Dispatch
Summary
by MITRE • 08/02/2024
Dispatch's notification service uses Jinja templates to generate messages to users. Jinja permits code execution within blocks, which were neither properly sanitized nor sandboxed. This vulnerability enables users to construct command line scripts in their custom message templates, which are then executed whenever these notifications are rendered and sent out.
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Analysis
by VulDB Data Team • 08/02/2024
The vulnerability identified as CVE-2024-7093 resides within Dispatch's notification service architecture where Jinja templates are utilized for message generation. This represents a critical security flaw that stems from improper template handling and lack of adequate sanitization mechanisms. The core issue manifests when users can craft custom message templates containing executable code within Jinja blocks, creating a potential attack vector that bypasses normal security controls. The vulnerability directly impacts the system's integrity and confidentiality by allowing unauthorized code execution through seemingly benign notification templates.
This technical flaw constitutes a code injection vulnerability that aligns with CWE-94, which describes the execution of arbitrary code due to insufficient input validation or sanitization. The vulnerability operates at the template engine level where Jinja's powerful templating capabilities are misused to execute system commands, effectively transforming the notification service into a potential command execution interface. The absence of proper sandboxing mechanisms within the template rendering process creates a direct pathway for attackers to escalate privileges and execute malicious payloads. The vulnerability is particularly concerning because it leverages legitimate system functionality to achieve unauthorized code execution, making detection more challenging.
The operational impact of CVE-2024-7093 extends beyond simple code execution to encompass potential system compromise and data exfiltration. When notification templates are rendered and sent out, any malicious code embedded within them executes in the context of the notification service, potentially allowing attackers to gain unauthorized access to system resources, escalate privileges, or execute arbitrary commands. This vulnerability can be exploited across multiple notification channels and user interactions, amplifying its potential impact. The attack surface expands significantly as any user with access to template customization features can potentially leverage this vulnerability, making it a critical concern for organizations relying on Dispatch's notification infrastructure.
Mitigation strategies for CVE-2024-7093 must address both immediate remediation and long-term architectural improvements. The primary solution involves implementing strict input sanitization and template validation mechanisms that prevent code execution within Jinja templates. Organizations should deploy template sandboxing solutions that restrict template execution to safe operations only, preventing access to system commands or file operations. Additionally, implementing principle of least privilege access controls for template customization features will limit the scope of potential exploitation. The remediation process should include comprehensive code review of all template processing components and implementation of automated scanning tools to detect potentially malicious template content. Organizations must also consider adopting secure template engines that do not permit arbitrary code execution, aligning with ATT&CK technique T1059.007 for command and scripting interpreter execution. Regular security assessments and penetration testing should be conducted to validate the effectiveness of implemented mitigations and ensure continued protection against similar vulnerabilities.