CVE-2020-4551 in i2 Analyst Notebook
Summary
by MITRE
IBM i2 Analyst Notebook 9.2.1 and 9.2.2 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: 183319.
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Analysis
by VulDB Data Team • 11/06/2020
IBM i2 Analyst Notebook version 9.2.1 and 9.2.2 contains a critical memory corruption vulnerability that enables local attackers to execute arbitrary code on affected systems. This vulnerability stems from insufficient input validation within the application's file processing mechanisms, specifically when handling specially crafted files that trigger buffer overflow conditions. The flaw exists in the software's handling of malformed data structures during file parsing operations, creating opportunities for attackers to manipulate memory layout and execute malicious code with the privileges of the targeted user.
The technical exploitation of this vulnerability follows a classic buffer overflow attack pattern where an attacker crafts a malicious file containing oversized or malformed data structures that exceed the allocated memory boundaries. When the vulnerable application attempts to process this crafted file, the memory corruption allows the attacker to overwrite critical memory locations including return addresses or function pointers, enabling code execution. This type of vulnerability is classified as a memory safety error and aligns with CWE-121, which describes heap-based buffer overflow conditions. The attack vector requires user interaction through file opening, making it particularly dangerous in environments where users frequently process external data or collaborate on shared workspaces.
The operational impact of this vulnerability extends beyond simple code execution, as it provides attackers with persistent access to compromised systems. Once successfully exploited, attackers can establish backdoors, escalate privileges, or use the compromised system as a launch point for further attacks within the network. The vulnerability affects organizations that rely on IBM i2 Analyst Notebook for intelligence analysis and data visualization, potentially compromising sensitive investigative data and operational security. Organizations with multiple users who regularly open files from external sources face heightened risk, particularly in threat intelligence and law enforcement environments where the software is commonly deployed.
Security professionals should prioritize immediate patching of affected systems, as IBM has released fixes addressing this vulnerability. Organizations should implement strict file validation policies and user education programs to reduce the attack surface, particularly regarding the opening of untrusted files. Network segmentation and privileged access controls can help limit the potential impact if exploitation occurs. The vulnerability demonstrates the importance of maintaining up-to-date software versions and implementing defense-in-depth strategies. From an ATT&CK framework perspective, this vulnerability maps to techniques such as T1059.001 for command and scripting interpreter and T1068 for exploit for privilege escalation, highlighting the need for comprehensive endpoint protection and monitoring solutions. Regular security assessments and vulnerability scanning should be conducted to identify and remediate similar memory corruption issues across the organization's software portfolio.