Stored Cross-site Scripting In IDAttend’s IDWeb Application

Vulnerability

IDAttend’s IDWeb application versions 3.1.052 and earlier contain a stored cross-site scripting (XSS) vulnerability. An attacker can inject arbitrary JavaScript code into the application’s data storage, which will be executed in the context of any logged-in user who views the affected page [1].

Exploitation

To exploit this vulnerability, an attacker must have network access to the IDWeb application and the ability to submit input that is not properly sanitized. The attacker injects malicious script into a field that is later rendered when other users (or the same user) view the data. No special privileges beyond normal user access to the feature are required; the attack does not require any user interaction beyond the victim loading the compromised page [1].

Impact

Successful exploitation allows the attacker to execute arbitrary JavaScript in the victim’s browser, effectively hijacking their active session. This can lead to unauthorized actions on behalf of the victim, including data manipulation or disclosure, within the context of the IDWeb application [1].

Mitigation

As of the publication date (2023-10-25), no patch is mentioned in the available reference. Affected organizations should contact IDAttend for an update or apply input validation and output encoding as a workaround. The vendor may release a fixed version beyond 3.1.052; if not, consider application-level firewall rules to block suspicious input [1].