CVE-2010-1622 in Fusion Middleware
Summary
by MITRE
SpringSource Spring Framework 2.5.x before 2.5.6.SEC02, 2.5.7 before 2.5.7.SR01, and 3.0.x before 3.0.3 allows remote attackers to execute arbitrary code via an HTTP request containing class.classLoader.URLs[0]=jar: followed by a URL of a crafted .jar file.
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Analysis
by VulDB Data Team • 12/30/2024
The vulnerability identified as CVE-2010-1622 represents a critical remote code execution flaw within the SpringSource Spring Framework versions prior to specific security patches. This vulnerability exists in the framework's handling of HTTP requests and specifically targets the classloader mechanism that processes external jar file references. The flaw allows attackers to manipulate the classloader's URL resolution process by crafting malicious HTTP requests that directly influence how the framework loads and executes Java classes from remote locations.
The technical exploitation mechanism leverages the framework's improper validation of classloader URLs, where attackers can inject malicious jar file references through the class.classLoader.URLs[0] parameter. When the Spring Framework processes an HTTP request containing the pattern jar: followed by a crafted URL, it attempts to load and execute classes from the specified jar file without adequate sanitization or validation. This creates a path traversal and code execution vulnerability that bypasses normal security boundaries typically enforced by the Java runtime environment. The vulnerability operates at the core of the framework's classloading infrastructure, making it particularly dangerous as it can be exploited without requiring specific application-level permissions or elevated privileges.
The operational impact of this vulnerability extends beyond simple code execution, as it can enable attackers to gain complete control over affected systems. Once exploited, adversaries can execute arbitrary commands on the server running the vulnerable Spring Framework, potentially leading to data breaches, system compromise, and further lateral movement within network environments. The vulnerability affects multiple major versions of the Spring Framework, including 2.5.x series before 2.5.6.SEC02 and 2.5.7 before 2.5.7.SR01, as well as 3.0.x before 3.0.3, indicating a widespread exposure across different release lines. This vulnerability aligns with CWE-471, which addresses the weakness of "Modification of Assumed-Immutable Data" in the context of classloader manipulation and dynamic code loading.
Security professionals should consider this vulnerability in relation to the ATT&CK framework's execution tactics, specifically the use of legitimate system tools and scripting languages for code execution. The vulnerability can be exploited through standard HTTP traffic, making it difficult to detect in network monitoring systems that do not specifically monitor for classloader URL manipulation patterns. Organizations running affected Spring Framework versions should implement immediate mitigations including patching to the latest secure releases, implementing network-level restrictions on jar file access, and deploying web application firewalls that can detect and block malicious classloader URL patterns. The vulnerability demonstrates the critical importance of proper input validation and secure classloading practices in enterprise application frameworks, particularly when dealing with dynamic content loading mechanisms that can be manipulated by remote attackers.