CVE-2012-1968 in Bugzilla
Summary
by MITRE
Bugzilla 4.1.x and 4.2.x before 4.2.2 and 4.3.x before 4.3.2 uses bug-editor privileges instead of bugmail-recipient privileges during construction of HTML bugmail documents, which allows remote attackers to obtain sensitive description information by reading the tooltip portions of an HTML e-mail message.
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Analysis
by VulDB Data Team • 03/27/2021
The vulnerability identified as CVE-2012-1968 affects Bugzilla versions 4.1.x through 4.2.1 and 4.3.x through 4.3.1, representing a significant security flaw in the email notification system of this widely used bug tracking platform. This issue stems from an improper privilege check during the generation of HTML bugmail documents, creating a vector for information disclosure that could expose sensitive bug description information to unauthorized parties. The vulnerability specifically impacts the tooltip functionality within HTML email messages, where sensitive data remains accessible despite the intended security controls.
The technical flaw resides in the privilege validation mechanism that governs how Bugzilla constructs HTML email notifications. During the generation of bugmail documents, the system incorrectly relies on bug-editor privileges rather than the more restrictive bugmail-recipient privileges when processing tooltip content. This misconfiguration allows remote attackers to craft malicious email requests that can extract sensitive information from bug descriptions through the tooltip portions of HTML email messages. The vulnerability operates at the application layer, specifically within the email generation and rendering components of Bugzilla's web interface.
The operational impact of this vulnerability extends beyond simple information disclosure, as it enables attackers to gather potentially sensitive bug information that might include confidential project details, security vulnerabilities, or other proprietary data. This represents a critical weakness in Bugzilla's access control model, as users who should only have read-only access to bugmail notifications can potentially extract additional information through the tooltip mechanism. The vulnerability affects organizations that rely on Bugzilla for project management and security tracking, potentially exposing confidential data to unauthorized parties who can exploit this privilege escalation vector.
The flaw aligns with CWE-284, which describes improper access control vulnerabilities where applications fail to properly enforce access restrictions. Additionally, this vulnerability maps to ATT&CK technique T1068, which involves the exploitation of privileges and access control mechanisms to gain unauthorized access to information. Organizations using affected Bugzilla versions face significant risk as attackers can leverage this vulnerability to obtain sensitive information without requiring elevated privileges or direct system access. The impact is particularly concerning in enterprise environments where Bugzilla serves as a central repository for project information and security tracking.
Mitigation strategies should include immediate patching to Bugzilla versions 4.2.2 and 4.3.2, which contain the necessary fixes for this privilege validation issue. Organizations should also implement network-level controls to monitor for unusual email traffic patterns that might indicate exploitation attempts. Regular security assessments of Bugzilla installations should include verification of privilege enforcement mechanisms and proper access control configurations. System administrators should review email notification settings and ensure that only authorized personnel have access to sensitive bug information through the email system. Additionally, organizations should consider implementing additional logging and monitoring to detect potential exploitation attempts and maintain audit trails of email processing activities.