CVE-2007-1136 in WebMplayer
Summary
by MITRE
index.php in WebMplayer before 0.6.1-Alpha allows remote attackers to execute arbitrary code via shell metacharacters in an exec function call. NOTE: some sources have referred to this as eval injection in the param parameter, but CVE source inspection suggests that this is erroneous.
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Analysis
by VulDB Data Team • 08/20/2018
The vulnerability identified as CVE-2007-1136 affects WebMplayer version 0.6.1-Alpha and earlier, presenting a critical remote code execution risk through improper input validation in the index.php script. This flaw resides in the handling of the exec function call where shell metacharacters can be injected, allowing attackers to execute arbitrary commands on the affected system. The vulnerability specifically manifests when user-supplied input is passed directly to the exec function without adequate sanitization or escaping, creating a path for malicious command injection attacks.
The technical implementation of this vulnerability stems from the application's failure to properly validate and sanitize user input before processing it through system execution functions. When the index.php script receives parameters containing shell metacharacters such as semicolons, ampersands, or backticks, these characters are interpreted by the underlying shell as command separators or operators rather than literal input. This behavior aligns with CWE-77, which describes improper neutralization of special elements used in system calls, and represents a classic example of command injection vulnerability. The flaw allows attackers to chain commands, redirect output, or execute arbitrary system binaries, potentially leading to complete system compromise.
The operational impact of this vulnerability is severe and far-reaching, as it enables remote attackers to gain unauthorized control over the affected web server. An attacker could leverage this vulnerability to execute system commands with the privileges of the web server process, potentially escalating to full system compromise. The attack surface is broad since the vulnerability affects a web-based media player application that likely runs on standard web servers, making it accessible to anyone who can submit requests to the affected index.php script. This type of vulnerability directly maps to ATT&CK technique T1059.001 for command and scripting interpreter, specifically targeting the execution of system commands through web interfaces.
Mitigation strategies for this vulnerability should focus on immediate patching of the WebMplayer application to version 0.6.1-Alpha or later, where the input sanitization issues have been addressed. Organizations should implement proper input validation and sanitization measures, ensuring that all user-supplied data is properly escaped before being passed to system execution functions. The principle of least privilege should be enforced by running the web server with minimal necessary permissions, and additional security measures such as web application firewalls should be deployed to monitor and filter suspicious requests. Network segmentation and monitoring solutions should be employed to detect and alert on unusual command execution patterns that might indicate exploitation attempts. Regular security assessments and vulnerability scanning should be conducted to identify similar input validation flaws in other web applications within the organization's infrastructure.