CVE-2014-9446 in Koha
Summary
by MITRE
Multiple cross-site scripting (XSS) vulnerabilities in the Staff client in Koha before 3.16.6 and 3.18.x before 3.18.2 allow remote attackers to inject arbitrary web script or HTML via the sort_by parameter to the (1) opac parameter in opac-search.pl or (2) intranet parameter in catalogue/search.pl.
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Analysis
by VulDB Data Team • 04/03/2018
The vulnerability CVE-2014-9446 represents a critical cross-site scripting flaw discovered in the Koha library management system, specifically affecting versions prior to 3.16.6 and 3.18.2. This vulnerability exists within the Staff client component of the system, which serves as the administrative interface for library personnel to manage catalog records, patron information, and other institutional data. The affected parameters are particularly concerning as they operate within core search functionality that is frequently accessed by library staff members. The vulnerability manifests when the sort_by parameter is manipulated in two distinct locations: first through the opac parameter in the opac-search.pl script which handles public catalog searches, and second through the intranet parameter in catalogue/search.pl which manages internal catalog searches. These locations represent critical attack vectors as they are part of the fundamental search and retrieval mechanisms that library staff depend upon for daily operations.
The technical nature of this vulnerability stems from insufficient input validation and output sanitization within the Koha application's parameter handling mechanisms. When attackers manipulate the sort_by parameter with malicious script content, the application fails to properly escape or filter the input before rendering it in the web response. This creates an environment where arbitrary JavaScript code can be executed within the context of a victim's browser session. The vulnerability is classified as a classic reflected XSS attack pattern where the malicious payload is embedded in the URL parameter and executed when the page is rendered. The flaw exists at the application layer where user-supplied data is directly incorporated into dynamic web content without proper security controls. According to CWE standards, this vulnerability maps to CWE-79 which describes improper neutralization of input during web page generation, and specifically relates to CWE-79-2009 which addresses cross-site scripting in parameters.
The operational impact of this vulnerability extends beyond simple data theft or defacement, as it provides attackers with the capability to compromise library staff accounts and potentially gain access to sensitive patron information. In a real-world scenario, an attacker could craft malicious URLs containing script payloads that would execute when library staff members click on links or navigate through search results. This could lead to session hijacking, data exfiltration, or even the execution of commands on the library's web server if additional vulnerabilities exist. The attack surface is particularly dangerous because library staff often have elevated privileges within the system, potentially allowing attackers to access confidential patron records, circulation data, or administrative functions. The vulnerability also poses risks to the broader network as library systems often serve as gateways to internal institutional resources, making this a potential entry point for more extensive attacks.
Mitigation strategies for CVE-2014-9446 should prioritize immediate patching of affected Koha installations to versions 3.16.6 or 3.18.2 where the vulnerability has been addressed. Organizations should implement comprehensive input validation at multiple layers including application-level filtering, web application firewalls, and proper output encoding for all user-supplied parameters. The implementation of Content Security Policy headers can provide additional defense-in-depth measures against XSS attacks by restricting script execution within the application context. Security monitoring should include detection of suspicious parameter patterns in web access logs, particularly around search parameters and URL structures. According to ATT&CK framework, this vulnerability would be categorized under T1059.007 for scripting and T1566 for spearphishing with a link, as attackers would likely use crafted URLs to deliver malicious payloads. Regular security assessments and code reviews should focus on parameter handling and input validation to prevent similar issues in other components of the system. Network segmentation and privileged account management should be implemented to limit the potential impact if an attacker successfully exploits this vulnerability.