CVE-2013-6829 in Mail-SeCure
Summary
by MITRE
admin/confnetworking.html in PineApp Mail-SeCure allows remote attackers to execute arbitrary commands via shell metacharacters in the pinghost parameter during a ping operation.
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Analysis
by VulDB Data Team • 12/07/2024
The vulnerability identified as CVE-2013-6829 represents a critical command injection flaw within the PineApp Mail-SeCure administrative interface. This security weakness exists in the admin/confnetworking.html component where user-supplied input is improperly validated and sanitized before being incorporated into system commands. The specific attack vector involves the pinghost parameter which is utilized during network diagnostic operations, creating an opportunity for remote attackers to manipulate the underlying ping functionality and execute arbitrary system commands with elevated privileges. This type of vulnerability falls under the category of command injection as defined by CWE-77, which occurs when a program constructs a command string using externally-provided data without proper validation or sanitization. The attack surface is particularly concerning because it targets the administrative interface of a security appliance, potentially allowing unauthorized actors to gain complete control over the mail security system.
The technical implementation of this vulnerability demonstrates a classic lack of input sanitization in web applications where user data directly influences system command execution. When administrators or attackers submit a pinghost parameter containing shell metacharacters such as semicolons, ampersands, or backticks, these characters are interpreted by the shell and executed as part of the command sequence. The PineApp Mail-SeCure system fails to properly escape or filter these special characters, creating a pathway for malicious input to bypass normal security controls. This flaw operates at the intersection of multiple attack techniques including command injection and privilege escalation as outlined in the MITRE ATT&CK framework under T1059 for Command and Scripting Interpreter and T1068 for Exploitation for Privilege Escalation. The vulnerability is particularly dangerous because it allows remote code execution without requiring authentication to the administrative interface, making it accessible to any attacker who can reach the web application.
The operational impact of this vulnerability extends far beyond simple command execution, as it fundamentally compromises the security posture of organizations relying on PineApp Mail-SeCure for email protection. Successful exploitation could enable attackers to gain full administrative control over the mail security appliance, potentially allowing them to modify security policies, disable protective measures, access encrypted communications, or even pivot to other systems within the network. The compromised system could serve as a launching point for broader attacks against internal infrastructure, making this vulnerability particularly attractive to threat actors. Organizations using this software face significant risk of data breaches, as the compromised mail security system could be used to monitor, modify, or exfiltrate email communications. The vulnerability also impacts the integrity of the security infrastructure, potentially allowing attackers to establish persistent backdoors or disable logging mechanisms that would normally alert administrators to security incidents. This type of vulnerability is classified as a critical risk in cybersecurity frameworks due to its potential for widespread impact and the ease with which it can be exploited.
Mitigation strategies for CVE-2013-6829 should focus on immediate patching of the affected PineApp Mail-SeCure software to address the input validation flaw. Organizations should implement network segmentation to limit access to the administrative interface, ensuring that only authorized personnel can reach the vulnerable web application. Input validation and sanitization measures must be strengthened throughout the application to prevent shell metacharacters from being processed as command instructions. The principle of least privilege should be enforced by restricting administrative access to the mail security appliance and implementing multi-factor authentication for administrative functions. Network monitoring solutions should be deployed to detect unusual command execution patterns or attempts to exploit similar vulnerabilities. Additionally, organizations should conduct comprehensive security assessments of their email infrastructure to identify other potential command injection vulnerabilities and ensure that all security appliances are kept up to date with the latest security patches. Regular security testing including penetration testing and vulnerability scanning should be performed to verify that remediation efforts have been effective and to identify any new security gaps that may have been introduced.