CVE-2012-2928 in Gliffy
Summary
by MITRE
The Gliffy plugin before 3.7.1 for Atlassian JIRA, and before 4.2 for Atlassian Confluence, does not properly restrict the capabilities of third-party XML parsers, which allows remote attackers to read arbitrary files or cause a denial of service (resource consumption) via unspecified vectors.
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Analysis
by VulDB Data Team • 12/02/2021
The vulnerability identified as CVE-2012-2928 represents a critical security flaw in the Gliffy plugin ecosystem for Atlassian's core products, specifically affecting versions prior to 3.7.1 for JIRA and 4.2 for Confluence. This issue stems from inadequate restrictions on third-party XML parser capabilities within the plugin's implementation, creating a significant attack surface that adversaries can exploit to compromise system integrity and availability. The flaw fundamentally undermines the security boundaries that should exist between the application's core functionality and external data processing components, particularly when handling XML content that may originate from untrusted sources.
The technical implementation of this vulnerability involves the plugin's failure to properly sanitize or restrict XML parser configurations when processing external content. This misconfiguration allows attackers to manipulate XML parsing behavior through specially crafted inputs that can trigger unintended file system access patterns or resource consumption behaviors. The vulnerability's impact spans both information disclosure and availability concerns, as attackers can potentially read arbitrary files from the server's file system or consume excessive system resources through malformed XML payloads. The unspecified vectors suggest that multiple attack pathways exist, including but not limited to XML external entity processing, path traversal scenarios, or resource exhaustion techniques that leverage the overly permissive XML parser settings.
From an operational perspective, this vulnerability presents a substantial risk to organizations using affected Atlassian products, as it enables remote code execution capabilities through file reading privileges and denial of service conditions. The attack surface is particularly concerning because it affects widely used collaboration and issue tracking platforms where users may inadvertently interact with malicious content through shared diagrams or integrated workflows. The vulnerability's persistence across different Atlassian products demonstrates a systemic issue in how third-party plugins handle XML processing, potentially affecting multiple installations within an organization's infrastructure. Security teams must consider that this flaw could be leveraged in broader attack chains, particularly when combined with other vulnerabilities or used as a reconnaissance tool to gather sensitive information from the target environment.
The mitigation strategy for CVE-2012-2928 requires immediate patching of affected Gliffy plugin versions to ensure proper XML parser restrictions are implemented. Organizations should also implement network-level controls to restrict access to the affected plugins and consider disabling third-party XML processing capabilities where possible. Security monitoring should focus on detecting unusual file access patterns or resource consumption spikes that may indicate exploitation attempts. This vulnerability aligns with CWE-20, which addresses improper input validation, and represents a classic example of how insecure XML processing can lead to information disclosure and denial of service conditions. The ATT&CK framework categorizes this as a technique involving exploitation of software vulnerabilities, with potential TTPs including privilege escalation through file reading capabilities and resource exhaustion for denial of service. Organizations should also conduct comprehensive security assessments of all third-party plugins to identify similar configuration weaknesses that may exist in their broader Atlassian ecosystem.