CVE-2010-4570 in Bugzilla
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in the duplicate-detection functionality in Bugzilla 3.7.1, 3.7.2, 3.7.3, and 4.0rc1 allows remote attackers to inject arbitrary web script or HTML via the summary field, related to the DataTable widget in YUI.
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Analysis
by VulDB Data Team • 10/13/2021
The CVE-2010-4570 vulnerability represents a critical cross-site scripting flaw discovered in Bugzilla's duplicate detection functionality across versions 3.7.1 through 4.0rc1. This vulnerability specifically targets the summary field within the DataTable widget implementation that utilizes the Yahoo User Interface (YUI) library, creating a pathway for remote attackers to execute malicious web scripts or HTML code within the context of affected user sessions. The flaw exists within the web application's input validation mechanisms, where user-supplied data from the summary field fails to undergo proper sanitization before being rendered back to users. This issue falls under CWE-79 which specifically addresses Cross-Site Scripting vulnerabilities, and aligns with ATT&CK technique T1566.001 related to Spearphishing Attachments, as attackers could leverage this vulnerability to deliver malicious payloads through seemingly legitimate bug reports.
The technical exploitation of this vulnerability occurs when an attacker crafts a malicious payload within the summary field of a bug report, which then gets processed through the DataTable widget's rendering mechanism. The YUI library's DataTable component, responsible for displaying bug data, fails to properly escape or filter user input, allowing HTML tags and JavaScript code to be executed in the victim's browser when they view the affected page. This creates a persistent XSS vector where any user who accesses the vulnerable page could be subjected to malicious script execution, potentially leading to session hijacking, credential theft, or redirection to malicious websites. The vulnerability is particularly concerning because Bugzilla is widely used by organizations for tracking software defects and security issues, making it a prime target for attackers seeking to compromise development environments.
The operational impact of this vulnerability extends beyond simple script injection, as it could enable attackers to manipulate the bug tracking system itself, potentially altering bug reports, creating false positives, or even gaining unauthorized access to sensitive development information. The flaw affects the integrity of the bug tracking database by allowing attackers to inject malicious content that could propagate through the system's user interface. Organizations relying on Bugzilla for security vulnerability management face significant risks, as attackers could use this vector to hide malicious code within legitimate bug reports, making detection more difficult. The vulnerability also impacts the availability and trustworthiness of the system, as users may become hesitant to interact with bug reports or may unknowingly execute malicious code when viewing affected entries.
Mitigation strategies for CVE-2010-4570 should focus on implementing proper input sanitization and output encoding mechanisms within the Bugzilla application, specifically addressing the DataTable widget's handling of user input. Organizations should upgrade to patched versions of Bugzilla where the vulnerability has been resolved, as the maintainers would have implemented proper HTML escaping for user-supplied content. The solution involves ensuring that all user input, particularly in fields that are rendered back to users, undergoes proper sanitization before being processed by the YUI DataTable component. Security measures should include implementing Content Security Policy headers, enabling proper HTTP headers to prevent XSS attacks, and conducting regular security testing of web applications to identify similar input validation flaws. Additionally, organizations should consider implementing web application firewalls and monitoring for suspicious input patterns that could indicate attempted exploitation of similar vulnerabilities. The remediation process should also include user education regarding the risks of clicking on untrusted links or content within bug tracking systems, as this vulnerability could be exploited through social engineering approaches.