CVE-2008-6570 in Garoon
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in the RSS reader in Cybozu Garoon 2.0.0 through 2.1.3 allows remote attackers to inject arbitrary web script or HTML via a crafted RSS feed.
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Analysis
by VulDB Data Team • 11/03/2018
The vulnerability identified as CVE-2008-6570 represents a critical cross-site scripting flaw within the RSS reader component of Cybozu Garoon versions 2.0.0 through 2.1.3. This security weakness resides in the application's handling of external RSS feed data, where insufficient input validation and output sanitization mechanisms fail to properly escape or filter malicious content before rendering it within the web interface. The vulnerability operates at the application layer and specifically targets the RSS feed parsing functionality that allows users to subscribe to external content within the Garoon platform.
The technical exploitation of this vulnerability occurs when a remote attacker crafts a malicious RSS feed containing embedded script code or HTML elements that are subsequently processed and displayed by the vulnerable RSS reader. When unsuspecting users view the compromised feed within the Garoon interface, the malicious code executes in the context of their browser session, potentially leading to session hijacking, credential theft, or redirection to malicious websites. This type of vulnerability falls under CWE-79 which specifically addresses Cross-Site Scripting flaws in web applications, and aligns with ATT&CK technique T1566.001 which covers spearphishing via web attachments.
The operational impact of this vulnerability extends beyond simple script execution as it can enable attackers to establish persistent access to user sessions within the Garoon environment. Attackers can leverage this weakness to perform actions such as reading confidential messages, modifying user permissions, or even escalating privileges within the application. The vulnerability affects all users who have access to the RSS reader functionality, making it particularly dangerous in corporate environments where Garoon serves as a central collaboration platform. The attack requires minimal user interaction beyond viewing the malicious feed, making it an effective vector for social engineering campaigns.
Mitigation strategies for CVE-2008-6570 should prioritize immediate application of vendor patches and updates to versions that address the XSS vulnerability in the RSS reader component. Organizations should implement input validation and output encoding mechanisms that properly sanitize all RSS feed content before rendering it within the web interface. Network-level defenses such as web application firewalls can provide additional protection by monitoring for suspicious script patterns in RSS feed requests. Security teams should also consider implementing content security policies to prevent execution of unauthorized scripts and regularly audit RSS feed subscriptions to identify potentially malicious sources. The vulnerability demonstrates the importance of validating and sanitizing all external data inputs, a principle reinforced by security standards such as OWASP Top Ten and NIST Cybersecurity Framework recommendations for secure coding practices.