CVE-2008-6570

Vulnerability

Cybozu Garoon versions 2.0.0 through 2.1.3 contain a cross-site scripting (XSS) vulnerability in the RSS reader component. The application does not properly sanitize content from an RSS feed, allowing an attacker to inject arbitrary HTML or JavaScript. The vulnerability is triggered when a user views a malicious RSS feed within the Garoon interface [1][2].

Exploitation

An attacker must craft an RSS feed containing malicious script code and deliver it to a Garoon user. No authentication is required to serve the feed, but the user must access the feed through the Garoon RSS reader. The attack is network-based and requires moderate complexity (e.g., the attacker must control the feed source or trick the user into subscribing to a malicious feed) [1].

Impact

Successful exploitation allows the attacker to execute arbitrary script in the context of the victim's browser. This can lead to session hijacking, defacement, or theft of sensitive information displayed in the Garoon interface. The impact is limited to the user's browser session; no direct server-side compromise occurs [1][2].

Mitigation

The vendor, Cybozu, released an update to address this issue. Users should apply the latest update provided by Cybozu (referenced as CY08-04-006). No workaround is documented; upgrading to a fixed version is the recommended solution [1][2].