CVE-2001-1358 in phpMyChat
Summary
by MITRE
Vulnerabilities in phpMyChat before 0.14.4 allow local and possibly remote attackers to gain privileges by specifying an alternate library file in the L (localization) parameter.
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Analysis
by VulDB Data Team • 05/29/2018
The vulnerability identified as CVE-2001-1358 affects phpMyChat versions prior to 0.14.4 and represents a classic path traversal or library inclusion flaw that enables unauthorized privilege escalation. This issue arises from inadequate input validation within the application's localization parameter handling mechanism. The vulnerability specifically impacts the L parameter which is used to specify localization files, allowing attackers to manipulate this parameter to load arbitrary library files from the system. The flaw exists because the application does not properly sanitize user input before using it to construct file paths or include library files, creating an opportunity for attackers to bypass normal access controls and potentially execute malicious code with elevated privileges.
From a technical perspective, this vulnerability operates as a local file inclusion (LFI) or remote file inclusion (RFI) vector depending on the attack scenario, and aligns with CWE-98 which describes improper direct object reference. The vulnerability allows attackers to manipulate the localization parameter to include files from unexpected locations, potentially enabling them to load malicious code or access sensitive system resources. In a local attack scenario, an attacker with access to the system could leverage this flaw to execute commands with the privileges of the web server process. When exploitable remotely, the vulnerability could allow attackers to gain unauthorized access to the system and potentially escalate privileges to the point of system compromise. The attack typically involves crafting malicious input that bypasses normal file access controls and loads alternate library files that contain attacker-controlled code.
The operational impact of CVE-2001-1358 extends beyond simple privilege escalation to encompass potential complete system compromise and data exfiltration. Organizations running vulnerable versions of phpMyChat face significant risk of unauthorized access to database systems, as the application typically interfaces directly with database servers. Attackers could potentially access sensitive data, modify database content, or even use the compromised system as a launch point for further attacks within the network infrastructure. The vulnerability's potential for remote exploitation makes it particularly dangerous in publicly accessible environments where phpMyChat is deployed. According to ATT&CK framework, this vulnerability maps to T1059 for command and scripting interpreter and T1078 for valid accounts, as attackers could leverage the privilege escalation to maintain persistent access and execute further malicious activities.
Mitigation strategies for CVE-2001-1358 primarily focus on immediate patching and input validation improvements. Organizations should upgrade to phpMyChat version 0.14.4 or later where the vulnerability has been addressed through proper input sanitization and parameter validation. Additionally, implementing proper access controls and restricting file inclusion paths can help prevent exploitation attempts. Network segmentation and web application firewalls can provide additional layers of protection by monitoring and blocking suspicious parameter values. Security hardening practices should include disabling unnecessary features, restricting file permissions, and implementing proper input validation at all entry points. Regular security audits and vulnerability assessments should be conducted to identify similar issues in other applications. The remediation process should also include monitoring for any exploitation attempts and implementing proper logging to track access patterns that may indicate attempted exploitation of this or similar vulnerabilities.