CVE-2020-7697 in mock2easy
Summary
by MITRE
This affects all versions of package mock2easy. a malicious user could inject commands through the _data variable: Affected Area require('../server/getJsonByCurl')(mock2easy, function (error, stdout) { if (error) { return res.json(500, error); } res.json(JSON.parse(stdout)); }, '', _data.interfaceUrl, query, _data.cookie,_data.interfaceType);
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Analysis
by VulDB Data Team • 11/06/2020
The vulnerability identified as CVE-2020-7697 resides within the mock2easy package, a tool designed for API mocking and testing environments. This security flaw represents a critical command injection vulnerability that stems from improper input validation and sanitization within the package's server-side processing logic. The vulnerability specifically manifests when malicious actors manipulate the _data variable parameter, which is subsequently processed without adequate security controls during the execution of server-side operations.
The technical implementation of this vulnerability occurs through the require('../server/getJsonByCurl') function call, where the _data variable is directly incorporated into command execution flows. The vulnerable code pattern demonstrates a classic case of insecure deserialization and command injection, as the _data.interfaceUrl, _data.cookie, and _data.interfaceType parameters are concatenated into shell commands without proper sanitization. This creates an environment where attacker-controlled input can be interpreted as executable commands rather than mere data, effectively allowing arbitrary code execution on the server hosting the mock2easy application.
The operational impact of this vulnerability extends beyond simple data compromise, as it enables full system compromise through remote code execution capabilities. An attacker with access to the application's interface or API endpoints could potentially execute arbitrary system commands with the privileges of the running process, which typically corresponds to the web server user account. This could lead to complete system takeover, data exfiltration, privilege escalation, and persistence mechanisms. The vulnerability affects all versions of the mock2easy package, indicating a widespread exposure across affected systems and installations.
Security professionals should recognize this vulnerability as mapping to CWE-78 and CWE-94 within the Common Weakness Enumeration framework, representing both command injection and insecure deserialization weaknesses. The ATT&CK framework categorizes this as a command and scripting interpreter technique under the execution phase, specifically targeting the use of shell commands for malicious purposes. Organizations utilizing mock2easy in development, testing, or staging environments face heightened risk, as these systems often contain sensitive data or serve as attack vectors for more comprehensive breaches. The vulnerability's exploitation requires minimal privileges and can be automated, making it particularly dangerous in environments where such tools are exposed to untrusted users or external networks.
Mitigation strategies should prioritize immediate package version updates or complete removal of the vulnerable mock2easy component from affected systems. Organizations must implement strict input validation and sanitization controls, particularly for any user-supplied data that might be processed through shell commands. Network segmentation and access controls should be enforced to limit exposure of systems containing vulnerable components. Additionally, implementing runtime application self-protection measures and monitoring for suspicious command execution patterns can provide early detection capabilities. Regular security assessments and dependency audits should be conducted to identify and remediate similar vulnerabilities across the entire application ecosystem, ensuring comprehensive protection against command injection threats.