CVE-2003-0237 in ICQ
Summary
by MITRE
The "ICQ Features on Demand" functionality for Mirabilis ICQ Pro 2003a does not properly verify the authenticity of software upgrades, which allows remote attackers to install arbitrary software via a spoofing attack.
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Analysis
by VulDB Data Team • 05/20/2019
The vulnerability identified as CVE-2003-0237 resides within the ICQ Features on Demand functionality of Mirabilis ICQ Pro 2003a, representing a critical security flaw in client-side software update mechanisms. This vulnerability stems from insufficient authentication checks during the software upgrade process, creating a pathway for malicious actors to execute unauthorized code execution on target systems. The flaw specifically affects the verification procedures that should ensure software integrity before installation, leaving the application susceptible to man-in-the-middle attacks where attackers can intercept and replace legitimate update files with malicious payloads.
The technical implementation of this vulnerability demonstrates a classic case of insecure update validation, where the software fails to properly authenticate software packages received from remote sources. This weakness operates at the application layer and can be exploited through network-based spoofing techniques that manipulate the update delivery process. Attackers can craft malicious upgrade packages that appear legitimate to the ICQ client, bypassing the normal verification mechanisms that would normally prevent installation of untrusted software components. The vulnerability essentially removes the cryptographic or digital signature verification that should occur during software updates, allowing arbitrary code execution with the privileges of the running ICQ application.
The operational impact of CVE-2003-0237 extends beyond simple unauthorized software installation, as it provides attackers with a persistent foothold within the victim's system. Once successfully exploited, attackers can install backdoors, keyloggers, or other malicious software that can remain undetected while providing ongoing access to the compromised system. The vulnerability affects systems where ICQ Pro 2003a is installed, potentially exposing users to a wide range of secondary attacks including credential theft, network reconnaissance, and data exfiltration. Given the widespread use of ICQ during the early 2000s, this vulnerability could have affected numerous users across different network environments, particularly in corporate or institutional settings where instant messaging clients were commonly used.
This vulnerability maps directly to CWE-502 which describes "Deserialization of Untrusted Data" and specifically relates to CWE-310 which covers "Cryptographic Issues" in the context of authentication failures. From an ATT&CK framework perspective, this vulnerability aligns with T1059.007 for "Command and Scripting Interpreter: Visual Basic" and T1071.004 for "Application Layer Protocol: DNS" as attackers may use these techniques to establish command and control channels. The vulnerability also corresponds to T1547.001 for "Registry Run Keys / Startup Folder" as malicious software installed through this vector could establish persistence mechanisms. Mitigation strategies should include immediate patching of affected ICQ versions, implementation of network monitoring to detect suspicious update traffic, and deployment of network access controls to prevent unauthorized software installation. Organizations should also consider implementing application whitelisting policies to prevent execution of unauthorized software components, particularly in environments where legacy instant messaging applications may still be in use. The vulnerability underscores the critical importance of proper software verification mechanisms and demonstrates how weak authentication in update systems can lead to complete system compromise.