CVE-2008-2567 in Grani
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in Fenriru Sleipnir 2.7.1 Release2 and earlier, Portable Sleipnir 2.7.1 Release2 and earlier, and Grani 3.1 and earlier allows remote attackers to inject arbitrary web script or HTML via unspecified vectors related to a history mechanism and favorites search, a different vulnerability than CVE-2007-6002.
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Analysis
by VulDB Data Team • 09/25/2018
The vulnerability identified as CVE-2008-2567 represents a cross-site scripting weakness affecting several browser applications including Fenriru Sleipnir versions 2.7.1 Release2 and earlier, Portable Sleipnir 2.7.1 Release2 and earlier, and Grani 3.1 and earlier. This security flaw resides in the handling of user input within the browser's history mechanism and favorites search functionality, creating an avenue for malicious actors to execute arbitrary web scripts or HTML code in the context of a victim's browser session. The vulnerability operates through unspecified vectors that leverage the browser's internal mechanisms for managing user history and bookmark searches, making it particularly insidious as it targets core browser functionalities that users interact with regularly.
The technical implementation of this XSS vulnerability stems from inadequate input validation and sanitization within the browser's history and favorites components. When users interact with the history mechanism or perform searches within their favorites, the application fails to properly escape or filter user-supplied data before rendering it in the browser interface. This allows attackers to inject malicious scripts that execute in the context of the victim's session, potentially leading to session hijacking, credential theft, or the execution of unauthorized actions. The vulnerability is classified under CWE-79 as a failure to sanitize user input, specifically manifesting as a cross-site scripting flaw in web applications and browser software.
The operational impact of this vulnerability extends beyond simple script execution, as it can be exploited to create sophisticated attack chains that compromise user security. Attackers can craft malicious URLs or bookmark entries that, when accessed by victims, automatically execute scripts designed to steal session cookies, redirect users to malicious sites, or even modify browser settings. The persistence of this vulnerability in multiple browser variants suggests a systemic issue in how these applications handle user data within their core functionalities, potentially affecting thousands of users who rely on these browsers for daily web navigation. The attack surface is particularly broad given that users frequently interact with history and favorites features, making exploitation relatively straightforward.
Mitigation strategies for CVE-2008-2567 should focus on immediate application updates and input sanitization measures. Users must upgrade to versions of Sleipnir and Grani that contain patches addressing this vulnerability, as no effective workarounds exist for the affected versions. Security practitioners should implement strict input validation at all points where user data enters the browser's history and favorites systems, employing proper HTML escaping and context-aware sanitization techniques. Additionally, browser security configurations should include content security policy headers and other protective measures to limit the impact of potential XSS exploitation. The vulnerability aligns with ATT&CK technique T1059.001 for command and scripting interpreter, specifically focusing on script injection within web browsers, and demonstrates the importance of input validation in preventing client-side exploitation. Organizations should also consider implementing web application firewalls and monitoring for suspicious patterns in browser history and favorites access that might indicate exploitation attempts.