CVE-2008-2230 in reportbug-ng
Summary
by MITRE
Untrusted search path vulnerability in (1) reportbug 3.8 and 3.31, and (2) reportbug-ng before 0.2008.06.04, allows local users to execute arbitrary code via a malicious module file in the current working directory.
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Analysis
by VulDB Data Team • 09/26/2018
The vulnerability described in CVE-2008-2230 represents a classic untrusted search path issue affecting reportbug versions 3.8 and 3.31, as well as reportbug-ng versions prior to 0.2008.06.04. This type of vulnerability falls under the CWE-426 category, which specifically addresses the execution of untrusted code due to improper handling of search paths. The flaw stems from the software's failure to properly validate or sanitize the module paths it uses during execution, creating a pathway for malicious code injection through carefully crafted module files placed in the current working directory.
The technical implementation of this vulnerability exploits the principle of path resolution where applications search for required modules or libraries in a predefined order of directories. When reportbug or reportbug-ng processes commands, it typically scans the current working directory for module files before checking system directories. This behavior creates an attack surface where a local malicious user can place a specially crafted module file in the directory from which the application is executed, causing the application to load and execute this malicious code instead of the legitimate module. The vulnerability is particularly concerning because it requires no special privileges beyond local access, making it a low-hanging fruit for attackers who have already gained a foothold on a system.
The operational impact of this vulnerability extends beyond simple code execution, as it can be leveraged to escalate privileges or establish persistent access within a compromised system. Attackers can craft malicious modules that perform various malicious activities including data exfiltration, privilege escalation, or creating backdoors. The vulnerability is especially dangerous in environments where users might execute reportbug commands with elevated privileges or in shared environments where multiple users have access to the same directories. From an ATT&CK framework perspective, this vulnerability maps to techniques such as T1068 (Local Privilege Escalation) and T1059 (Command and Scripting Interpreter), as it allows for arbitrary code execution through legitimate system tools.
Mitigation strategies for CVE-2008-2230 should focus on implementing proper input validation and secure path resolution practices. The most effective approach involves modifying the application's module loading mechanism to explicitly specify absolute paths for module files or to verify the integrity of modules before loading them. System administrators should also implement proper file permissions and directory access controls to prevent unauthorized users from placing malicious files in directories where reportbug applications are executed. Additionally, upgrading to patched versions of reportbug and reportbug-ng that address this specific vulnerability is essential, as the maintainers have likely implemented secure path resolution mechanisms to prevent the exploitation of this flaw. Organizations should also consider implementing monitoring and alerting for unusual file creation patterns in directories where these applications operate, as this could indicate potential exploitation attempts.