CVE-2025-3322 in OnlineSuite
Summary
by MITRE • 06/06/2025
An improper neutralization of inputs used in expression language allows remote code execution with the highest privileges on the server.
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Analysis
by VulDB Data Team • 06/06/2025
This vulnerability represents a critical remote code execution flaw that arises from inadequate input validation within expression language processing components. The issue manifests when user-supplied data is improperly handled during expression evaluation, creating opportunities for malicious actors to inject arbitrary code that executes with the highest privileges available on the target server. Such vulnerabilities typically occur in systems that process dynamic expressions or scripts without proper sanitization mechanisms, allowing attackers to manipulate the evaluation context and execute unintended commands. The severity classification indicates that successful exploitation can result in complete system compromise, making this a critical concern for enterprise environments where server privileges are elevated.
The technical root cause stems from insufficient neutralization of input data within expression language parsers or evaluators. When systems accept user input for dynamic expression processing, they often fail to properly validate or sanitize the data before execution, creating injection points that can be leveraged to bypass security controls. This flaw typically aligns with CWE-94, which describes "Improper Control of Generation of Code" where code is generated or executed without proper safeguards against malicious input. The vulnerability enables attackers to construct expressions that, when evaluated, execute arbitrary commands with the privileges of the affected service account, potentially leading to full system compromise.
Operational impact of this vulnerability extends beyond simple privilege escalation to encompass complete system takeover capabilities. Attackers can leverage this weakness to execute arbitrary code with system-level privileges, potentially leading to data exfiltration, lateral movement within networks, and persistence mechanisms. The remote nature of the exploit means that attackers can target vulnerable systems from external networks without requiring local access or authentication. This vulnerability can be particularly dangerous in cloud environments or containerized applications where elevated privileges are common, as it can facilitate lateral movement and privilege escalation across multiple system components. The impact is amplified when the vulnerable service runs with administrative privileges, as attackers can gain complete control over the affected system and potentially compromise entire network infrastructures.
Mitigation strategies should focus on implementing comprehensive input validation and sanitization mechanisms throughout the expression language processing pipeline. Organizations must ensure that all user-supplied input undergoes strict validation before any expression evaluation occurs, implementing proper escaping and encoding techniques to prevent injection attacks. The principle of least privilege should be enforced by running vulnerable services with minimal required permissions rather than administrative privileges. Regular security assessments and code reviews should specifically target expression language components, examining how inputs are processed and validated. Additionally, implementing web application firewalls and runtime application self-protection mechanisms can provide additional layers of defense. Organizations should also consider adopting secure coding practices that align with industry standards such as those recommended in the OWASP Top Ten and NIST guidelines for preventing injection vulnerabilities. The ATT&CK framework categorizes this type of vulnerability under T1059.007 for "Command and Scripting Interpreter: PowerShell" and similar techniques, emphasizing the need for proper input validation and execution context control to prevent unauthorized code execution.