CVE-2002-2444 in Snoopy
Summary
by MITRE
Snoopy 2.0.0-1 has a security hole in exec cURL
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Analysis
by VulDB Data Team • 10/28/2019
The vulnerability identified as CVE-2002-2444 affects Snoopy version 2.0.0-1, a popular PHP-based web client library that facilitates HTTP requests and web scraping operations. This security hole specifically manifests within the exec cURL functionality of the Snoopy library, creating a potential attack surface that could be exploited by malicious actors to compromise systems utilizing this component. The flaw represents a critical weakness in the library's handling of external command execution processes, particularly when integrating with cURL for HTTP operations.
The technical flaw stems from insufficient input validation and sanitization within the Snoopy library's cURL execution mechanism. When the library processes HTTP requests through cURL, it fails to properly sanitize user-supplied input that gets passed to the underlying cURL functions. This inadequate validation creates opportunities for command injection attacks where attackers can manipulate the execution flow by injecting malicious commands through parameters that should remain strictly controlled. The vulnerability essentially allows for arbitrary code execution on systems where Snoopy is deployed, particularly when the library is used to process untrusted data from web forms, API endpoints, or other external sources. This weakness directly corresponds to CWE-78, which describes improper neutralization of special elements used in OS commands, making it a classic command injection vulnerability.
The operational impact of this vulnerability extends beyond simple data theft or service disruption, as it provides attackers with the capability to execute arbitrary commands on affected systems with the privileges of the web server process. Systems running vulnerable versions of Snoopy become susceptible to full compromise, potentially allowing attackers to establish persistent access, escalate privileges, or use the compromised server as a pivot point for attacking internal network resources. The vulnerability affects web applications that rely on Snoopy for HTTP operations, particularly those that process user input through the library's cURL execution functions, making it especially dangerous in environments where user-supplied data is not properly validated or sanitized before being passed to the library. This type of vulnerability aligns with ATT&CK technique T1059.001, which covers command and scripting interpreter execution, and represents a significant threat to web application security.
Mitigation strategies for CVE-2002-2444 require immediate action to address the root cause through proper input validation and sanitization practices. Organizations should prioritize updating to patched versions of the Snoopy library, as the vulnerability has been addressed in subsequent releases that properly validate and escape all input passed to cURL functions. System administrators should implement strict input filtering mechanisms and avoid passing user-supplied data directly to cURL execution functions without proper sanitization. Additional protective measures include restricting the web server's execution permissions, implementing network segmentation, and deploying web application firewalls to monitor and block suspicious command execution patterns. The vulnerability also highlights the importance of regular security assessments and dependency updates, as it demonstrates how outdated third-party libraries can create persistent security risks. Organizations should also consider implementing runtime monitoring solutions that can detect and alert on anomalous command execution patterns that might indicate exploitation attempts.