CVE-2010-2470 in Bugzilla
Summary
by MITRE
Install/Filesystem.pm in Bugzilla 3.5.1 through 3.6.1 and 3.7 through 3.7.1, when use_suexec is enabled, uses world-readable permissions within (1) .bzr/ and (2) data/webdot/, which allows local users to obtain potentially sensitive data by reading files in these directories, a different vulnerability than CVE-2010-0180.
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Analysis
by VulDB Data Team • 01/23/2025
The vulnerability identified as CVE-2010-2470 affects Bugzilla versions 3.5.1 through 3.6.1 and 3.7 through 3.7.1 when the use_suexec configuration option is enabled. This issue represents a privilege escalation and information disclosure vulnerability that stems from improper file system permissions within specific directories used by the Bugzilla application. The vulnerability specifically impacts the .bzr/ and data/webdot/ directories where world-readable permissions are incorrectly applied, creating a security risk that allows local users to access potentially sensitive data that should remain restricted.
The technical flaw manifests in the Install/Filesystem.pm component of Bugzilla, which is responsible for managing file system operations during installation and configuration processes. When use_suexec is enabled, the system attempts to execute CGI scripts under the privileges of the web server user rather than the default system user. However, during this process, the script fails to properly set restrictive permissions on the .bzr/ directory, which contains version control metadata, and the data/webdot/ directory, which stores webdot graph data. These directories contain sensitive information including version control history, configuration details, and potentially user data that could be accessed by any local user with read permissions.
The operational impact of this vulnerability is significant for systems running Bugzilla with use_suexec enabled, as it creates an information disclosure channel that could expose sensitive data to unauthorized local users. The .bzr/ directory may contain version control information that could reveal development processes, code changes, and potentially sensitive configuration details. The data/webdot/ directory could contain graph data that might expose system architecture, user patterns, or other operational information. This vulnerability is distinct from CVE-2010-0180, indicating it addresses a different attack vector or set of conditions, making it a separate but equally concerning security issue. The flaw essentially undermines the intended security boundaries that use_suexec is designed to enforce, allowing local privilege escalation through information disclosure rather than direct code execution.
This vulnerability aligns with CWE-732, which describes Incorrect Permission Assignment for Critical Resources, and represents a clear failure in proper access control implementation. The issue demonstrates poor security hygiene in file system permission management, where critical directories are not properly secured against unauthorized access. From an attack perspective, this vulnerability fits within the ATT&CK technique T1087.001, which involves account access removal and privilege escalation through information gathering and reconnaissance activities. Organizations should implement immediate mitigations including proper permission configuration for the affected directories, disabling use_suexec if not required, and conducting comprehensive security audits of file system permissions in web applications. The vulnerability also highlights the importance of proper security testing and configuration management, particularly when implementing security features like suexec that are designed to enhance security but can introduce new attack surfaces if not properly implemented.