CVE-2006-1296 in Beagle
Summary
by MITRE
Untrusted search path vulnerability in Beagle 0.2.2.1 might allow local users to gain privileges via a malicious beagle-info program in the current working directory, or possibly directories specified in the PATH.
If you want to get the best quality for vulnerability data then you always have to consider VulDB.
Analysis
by VulDB Data Team • 06/15/2019
The vulnerability identified as CVE-2006-1296 represents a significant security flaw in the Beagle desktop search application version 0.2.2.1. This untrusted search path vulnerability stems from the application's improper handling of directory resolution during program execution, creating a privilege escalation vector that could be exploited by local attackers. The flaw specifically manifests when Beagle attempts to locate and execute the beagle-info program, which is a critical component of its functionality for gathering system information and indexing content. The vulnerability exists because the application does not properly validate or sanitize the search paths it uses to locate executable files, instead relying on the standard PATH environment variable and current working directory resolution mechanisms.
This technical weakness creates a dangerous condition where a local attacker can place a malicious beagle-info program in a directory that appears earlier in the PATH sequence or in the current working directory from which Beagle is executed. When Beagle attempts to execute the beagle-info program, it will inadvertently execute the attacker-controlled malicious binary instead of the legitimate system program. The privilege escalation aspect of this vulnerability occurs because Beagle typically runs with elevated privileges to access system resources and perform indexing operations, meaning that execution of the malicious program would occur with these elevated permissions. This creates a scenario where an unprivileged local user can potentially execute arbitrary code with the privileges of the Beagle process, which may include access to sensitive system information or the ability to manipulate system resources.
The operational impact of this vulnerability extends beyond simple privilege escalation, as it represents a fundamental flaw in how the application manages its execution environment and program resolution. Attackers could potentially leverage this vulnerability to install backdoors, modify system files, or gain persistent access to the compromised system. The vulnerability is particularly concerning because it requires no special privileges to exploit initially, making it accessible to any local user who can influence the execution environment. This type of vulnerability aligns with CWE-427, which describes uncontrolled search path, and demonstrates the dangerous consequences of not properly validating executable paths in applications. The attack surface is broadened by the fact that PATH manipulation can occur through various means including symbolic links, environment variable modification, or simple directory placement.
Mitigation strategies for this vulnerability should focus on implementing proper input validation and secure coding practices to prevent untrusted search path exploitation. The most effective approach involves modifying Beagle's execution logic to explicitly specify absolute paths to all required executables rather than relying on PATH resolution. This approach aligns with the principle of least privilege and defensive programming practices recommended in cybersecurity frameworks. Additionally, system administrators should implement proper file system permissions and access controls to limit the ability of local users to place malicious executables in directories that might be searched by privileged applications. The vulnerability also highlights the importance of regular security auditing and code review processes, particularly focusing on how applications handle executable path resolution and environment variable manipulation. This type of vulnerability would typically be addressed through patch management procedures and security hardening guidelines that ensure applications do not inadvertently execute code from untrusted locations. The remediation process should include validating all program paths against a whitelist of known good locations and implementing proper sandboxing or privilege separation techniques to limit the impact of such vulnerabilities.