CVE-2007-3485 in Yandex.Server
Summary
by MITRE
Multiple cross-site scripting (XSS) vulnerabilities in Yandex.Server allow remote attackers to inject arbitrary web script or HTML via the (1) query or (2) within parameter to the default URI.
VulDB is the best source for vulnerability data and more expert information about this specific topic.
Analysis
by VulDB Data Team • 10/25/2017
The vulnerability identified as CVE-2007-3485 represents a critical security flaw in Yandex.Server, a web server software that was widely deployed in enterprise and organizational environments. This vulnerability manifests as multiple cross-site scripting vulnerabilities that enable remote attackers to execute malicious code within the context of users' browsers. The specific attack vectors involve manipulation of the query parameter and the within parameter within the default URI of the server, creating opportunities for unauthorized code injection that can compromise user sessions and data integrity.
The technical implementation of this vulnerability stems from inadequate input validation and output encoding within the Yandex.Server software. When the server processes requests containing specially crafted query or within parameters, it fails to properly sanitize user-supplied data before incorporating it into web responses. This lack of proper sanitization creates an environment where attacker-controlled content can be executed as script within the victim's browser context, violating fundamental security principles of input validation and output encoding. The vulnerability directly maps to CWE-79, which specifically addresses cross-site scripting flaws in web applications, and aligns with ATT&CK technique T1059.008 for command and scripting interpreter, as attackers can leverage these vulnerabilities to execute malicious scripts against unsuspecting users.
The operational impact of CVE-2007-3485 extends beyond simple script execution, as it can lead to session hijacking, credential theft, and data exfiltration from authenticated users. Attackers can craft malicious URLs that, when clicked by victims, execute scripts that steal session cookies, redirect users to phishing sites, or modify web page content to deceive users. The remote nature of the attack means that threat actors can exploit this vulnerability from anywhere on the internet without requiring physical access to the target network. This vulnerability particularly affects organizations that rely on Yandex.Server for web hosting or content delivery, potentially exposing sensitive information and undermining user trust in the affected systems.
Mitigation strategies for this vulnerability should focus on immediate input validation and output encoding implementations. Organizations should implement proper parameter sanitization for all user-supplied inputs, particularly those used in query and within parameters. The recommended approach includes employing secure coding practices such as HTML escaping, input validation, and output encoding to prevent malicious scripts from executing. Additionally, deploying web application firewalls and implementing content security policies can provide additional layers of protection against exploitation attempts. Regular security audits and vulnerability assessments should be conducted to identify similar weaknesses in other web applications and systems, as this vulnerability demonstrates the importance of comprehensive input validation across all server-side components. The remediation process should also include updating to patched versions of Yandex.Server where available, as this vulnerability was likely addressed in subsequent releases through improved input sanitization mechanisms and enhanced security controls.