CVE-2020-4545 in Aspera Connect
Summary
by MITRE
IBM Aspera Connect 3.9.9 could allow a remote attacker to execute arbitrary code on the system, caused by improper loading of Dynamic Link Libraries by the import feature. By persuading a victim to open a specially-crafted .DLL file, an attacker could exploit this vulnerability to execute arbitrary code on the system. IBM X-Force ID: 183190.
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Analysis
by VulDB Data Team • 11/12/2020
IBM Aspera Connect 399 contains a critical vulnerability that enables remote code execution through improper dynamic link library loading mechanisms. This flaw resides in the import feature functionality of the software, which fails to properly validate or sanitize the loading of dynamic libraries from untrusted sources. The vulnerability specifically affects the application's handling of .DLL files during the import process, creating an attack vector where malicious code can be executed with the privileges of the affected user.
The technical exploitation occurs when a victim opens a specially crafted .DLL file that has been designed to exploit the improper loading mechanism. This type of vulnerability falls under CWE-427 Uncontrolled Search Path Element, where the application does not properly control the search path used to load dynamic libraries. The flaw represents a classic case of insecure library loading that allows attackers to inject malicious code into the target system through seemingly legitimate import operations.
The operational impact of this vulnerability extends beyond simple code execution, as it provides attackers with the ability to establish persistent access to compromised systems. Attackers can leverage this vulnerability to install backdoors, exfiltrate data, or deploy additional malware payloads. The remote nature of the attack means that exploitation can occur without physical access to the target system, making it particularly dangerous for enterprise environments where users may inadvertently open malicious files. This vulnerability directly maps to ATT&CK technique T1059 Command and Scripting Interpreter, as it enables arbitrary code execution through the import feature.
Mitigation strategies should focus on immediate patching of affected IBM Aspera Connect installations to version 3.10.0 or later, which contains the necessary fixes for the dynamic library loading issue. Organizations should also implement strict file validation policies and restrict the execution of .DLL files from untrusted sources. Network-based mitigations can include firewall rules that block suspicious file transfers and endpoint protection solutions that monitor for suspicious library loading behaviors. Additionally, user education programs should emphasize the importance of not opening unknown or untrusted files, particularly those with .DLL extensions, to prevent successful exploitation attempts.