CVE-2006-4308

Vulnerability

Multiple cross-site scripting (XSS) vulnerabilities exist in Blackboard Learning System (Release 6), Blackboard Learning and Community Portal Suite (Release 6 build 6.2.3.23), and Blackboard Vista 4. These flaws stem from the software's failure to properly sanitize user-supplied input before incorporating it into dynamically generated content, allowing for the injection of arbitrary Javascript, VBScript, or HTML via various HTML tags when posting to the Discussion Board [1].

Exploitation

An attacker can exploit these vulnerabilities by posting specially crafted HTML or script code to the Discussion Board. No specific authentication or network position is mentioned as required, suggesting that any authenticated user could potentially trigger the vulnerability. The attacker needs to craft malicious input that includes Javascript, VBScript, or malformed URIs within HTML tags [1].

Impact

Successful exploitation allows an attacker to inject arbitrary Javascript, VBScript, or HTML, which executes in the context of the affected website. This can lead to various attacks, including stealing cookie-based authentication credentials, controlling the site's rendering for the user (defacement), or other unspecified attacks [1].

Mitigation

Reports indicate that versions 7.0 and 7.1 may have addressed this issue, but this has not been confirmed. Blackboard Academic Suite - Vista 4 is also reported as vulnerable. No specific patched version or release date is available in the provided references, and no workarounds are detailed [1].