CVE-2009-3386 in Bugzilla
Summary
by MITRE
Template.pm in Bugzilla 3.3.2 through 3.4.3 and 3.5 through 3.5.1 allows remote attackers to discover the alias of a private bug by reading the (1) Depends On or (2) Blocks field of a related bug.
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Analysis
by VulDB Data Team • 02/16/2025
The vulnerability described in CVE-2009-3386 affects Bugzilla versions 3.3.2 through 3.4.3 and 3.5 through 3.5.1, specifically within the Template.pm component. This issue represents a significant information disclosure flaw that undermines the confidentiality controls designed to protect private bug reports within the Bugzilla bug tracking system. The vulnerability stems from improper access control mechanisms that fail to adequately restrict information flow between different bug reports, creating an unintended pathway for attackers to discover sensitive data.
The technical flaw manifests through the manipulation of two specific fields within the bug tracking system: the Depends On and Blocks fields. These fields are typically used to establish relationships between different bugs, but in this vulnerability, they inadvertently expose alias information from private bugs when accessed through related public or accessible bug reports. Attackers can exploit this by constructing requests that traverse the dependency relationships, effectively bypassing the intended access controls that should prevent unauthorized access to private bug information. This represents a classic case of insufficient authorization checks where the system fails to validate that the requesting user has proper clearance to view the aliased bug information.
The operational impact of this vulnerability extends beyond simple information disclosure, as it fundamentally compromises the integrity of the bug tracking system's access control model. Private bugs contain sensitive information that may include security vulnerabilities, proprietary code details, or other confidential data that should remain restricted to authorized personnel only. The ability to discover private bug aliases through relationship fields means that attackers can map out the complete bug landscape of an organization, potentially identifying additional targets for exploitation or gaining insights into the security posture of the tracked systems. This vulnerability aligns with CWE-200, which addresses improper output neutralization for logs, and reflects the broader category of information exposure vulnerabilities that can enable further attacks.
From a threat modeling perspective, this vulnerability enables adversaries to perform reconnaissance activities that would normally be restricted, potentially leading to more sophisticated attacks against the targeted organization's software development processes. The ATT&CK framework categorizes this type of vulnerability under information gathering techniques where attackers can use information disclosure to build detailed profiles of target systems. The impact is particularly severe in environments where Bugzilla serves as a primary tool for tracking security vulnerabilities, as this disclosure could reveal the existence of previously unknown security issues before they are properly addressed. Organizations using affected Bugzilla versions should implement immediate mitigations including access control updates, field-level restrictions, and comprehensive security reviews of their bug tracking infrastructure to prevent unauthorized information disclosure.