CVE-2020-4552 in i2 Analyst Notebook
Summary
by MITRE
IBM i2 Analyst Notebook 9.2.1 could allow a local attacker to execute arbitrary code on the system, caused by a memory corruption. By persuading a victim to open a specially-crafted file, an attacker could exploit this vulnerability to execute arbitrary code on the system. IBM X-Force ID: 183320.
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Analysis
by VulDB Data Team • 11/06/2020
IBM i2 Analyst Notebook 9.2.1 contains a critical memory corruption vulnerability that enables local privilege escalation through arbitrary code execution. This flaw resides in the application's handling of specially crafted files during the parsing process, where insufficient input validation leads to memory corruption conditions that can be exploited by malicious actors. The vulnerability specifically affects the file processing functionality that interprets graphical analysis data structures, creating opportunities for attackers to manipulate memory layout and execute malicious payloads with elevated privileges. The attack vector requires social engineering to convince victims to open malicious files, making it particularly dangerous in targeted environments where users may encounter crafted analysis notebooks. This vulnerability aligns with CWE-121, which describes heap-based buffer overflow conditions, and represents a classic memory corruption exploit pattern that has been documented across numerous enterprise applications. The technical implementation involves manipulation of data structures that control the rendering and processing of analytical graphs, where improper bounds checking allows attackers to overwrite critical memory regions. The impact extends beyond simple code execution to potentially enable full system compromise, as the application typically runs with elevated privileges during analysis operations. This vulnerability demonstrates the ongoing challenges in secure software development for analytical platforms where complex data structures must be processed without adequate memory safety mechanisms. The flaw represents a significant risk in environments where analysts frequently handle sensitive data from external sources, as the attack requires minimal user interaction beyond opening a malicious file. Security researchers have identified this issue as particularly concerning due to its potential for privilege escalation and the difficulty in detecting malicious file content within legitimate analysis workflows. The vulnerability operates at the application layer and can be classified under ATT&CK technique T1059.001 for command and scripting interpreter, as successful exploitation allows for arbitrary code execution through legitimate application interfaces. IBM's X-Force ID 183320 confirms the severity and attack surface characteristics of this flaw. Organizations should implement immediate mitigations including application whitelisting, file extension restrictions, and user education programs to reduce the risk of exploitation. The vulnerability highlights the importance of secure coding practices in data visualization and analysis applications, particularly those handling untrusted data inputs from external sources. Regular security assessments and patch management procedures become critical for maintaining system integrity. This flaw exemplifies how memory corruption vulnerabilities in enterprise analysis tools can create persistent security risks that require comprehensive remediation strategies involving both software updates and operational security improvements. The attack scenario typically involves initial compromise through malicious file delivery, followed by privilege escalation to system-level access, making this vulnerability particularly dangerous in multi-user environments. The exploitation process leverages the application's legitimate file processing capabilities to achieve unauthorized code execution, demonstrating the importance of input sanitization and memory safety in enterprise software development practices.