CVE-2020-4636 in Resilient OnPrem
Summary
by MITRE • 10/16/2020
IBM Resilient OnPrem 38.2 could allow a privileged user to inject malicious commands through Python3 scripting. IBM X-Force ID: 185503.
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Analysis
by VulDB Data Team • 11/20/2020
The vulnerability identified as CVE-2020-4636 affects IBM Resilient OnPrem version 38.2, representing a critical security flaw that enables authenticated privileged users to execute arbitrary command injection attacks through Python3 scripting capabilities. This vulnerability resides within the platform's handling of user-supplied input within scripting contexts, creating a pathway for malicious actors with sufficient privileges to escalate their access and potentially compromise the entire system. The issue stems from inadequate input validation and sanitization mechanisms that fail to properly escape or filter user-provided data before it is processed within Python3 execution environments. Such command injection vulnerabilities are particularly dangerous in security orchestration platforms where privileged users often have elevated system access and can leverage these capabilities to execute malicious code with the privileges of the affected application.
The technical implementation of this vulnerability occurs when privileged users can manipulate Python3 scripting features to include malicious commands within their input. This typically involves bypassing standard input validation controls that should prevent dangerous characters or sequences from being executed as part of command execution flows. The flaw aligns with CWE-77 and CWE-94 categories, specifically addressing command injection and code injection weaknesses where user-controllable data is improperly integrated into executable code. Attackers can exploit this by crafting malicious Python3 scripts that contain shell command injection patterns, allowing them to execute arbitrary system commands on the underlying host. The vulnerability's impact is amplified by the fact that it requires only privileged access, which in security platforms like IBM Resilient often includes administrative or power user accounts that have significant system privileges. This makes the attack surface particularly concerning as legitimate users with elevated permissions can be compromised or coerced into executing malicious code.
The operational consequences of this vulnerability extend beyond simple command execution, as it can enable attackers to escalate privileges, access sensitive data, modify system configurations, and potentially establish persistent backdoors within the environment. The affected IBM Resilient OnPrem platform serves as a critical component in incident response and security orchestration workflows, making the compromise of this system particularly damaging to organizational security postures. Security teams may find that this vulnerability allows attackers to bypass traditional security controls, as the malicious commands execute within the legitimate application context, making detection more challenging. The platform's scripting capabilities, while essential for automation and workflow customization, become attack vectors when proper input validation is absent. This vulnerability can be exploited to gain access to confidential incident data, manipulate security workflows, or even compromise the integrity of the entire security orchestration environment. The impact is further compounded by the fact that such platforms typically contain sensitive information about security incidents, threat intelligence, and organizational security posture data that makes them attractive targets for adversaries.
Organizations should implement immediate mitigations including applying the latest security patches provided by IBM, implementing strict input validation controls for all scripting features, and conducting comprehensive privilege reviews to ensure that only necessary users have access to scripting capabilities. Network segmentation and monitoring should be enhanced to detect anomalous command execution patterns, while security teams should establish baseline configurations that disable unnecessary scripting features. The vulnerability demonstrates the importance of secure coding practices and input sanitization, particularly in platforms that handle sensitive security data and provide extensive scripting capabilities. Organizations should also consider implementing automated code review processes and vulnerability scanning tools that can detect similar injection flaws in custom scripts and extensions. Regular security assessments of scripting environments and privileged user access controls should be conducted to prevent exploitation of similar vulnerabilities. The incident highlights the critical need for defense-in-depth strategies that go beyond traditional perimeter security, as vulnerabilities in privileged application features can provide attackers with significant system access. This vulnerability underscores the necessity of maintaining current security patches and implementing robust access control policies in security orchestration platforms to prevent command injection attacks that could compromise entire security infrastructures.