CVE-2018-7193 Scanner

osTicket is a widely used open-source help desk and ticketing platform frequently utilized by organizations across various sectors to manage, organize, and archive support requests. It allows teams to streamline customer service operations, providing a centralized platform for handling client interactions and inquiries. Due to its open-source nature and extensive configurability, osTicket is particularly favored by small to medium-sized enterprises and support desks looking for cost-effective solutions with flexible customization options. Its broad adoption is overseen by system administrators and IT personnel who are tasked with maintaining its functionality and security. osTicket includes functionalities like ticket creation, automation, and collaboration that enable efficient handling of diverse customer issues. The platform's regular updates and community-driven enhancements ensure it can be tailored to the specific needs of each organization.

Cross-Site Scripting (XSS) is a prevalent web security vulnerability that allows attackers to inject scripts into web pages viewed by others. This vulnerability exists in osTicket's previous versions, specifically those earlier than 1.10.2, due to improper validation of input parameters. Attackers can exploit XSS to execute malicious scripts in the context of the user's browser, potentially leading to data theft or session hijacking. The vulnerability affects the /scp/directory.php endpoint, making it a target for remote attackers seeking to inject web scripts through the "order" parameter. Consequences of a successful attack include unauthorized actions performed on behalf of the victim and exposure of sensitive information.

The vulnerability in osTicket targeted by this scanner lies within the /scp/directory.php endpoint, specifically in the "order" parameter which fails to properly sanitize user input. Technical details reveal that this weakness can be exploited by sending a crafted HTTP request containing malicious scripts, which are then rendered within the victim's browser session. An attacker must manipulate this parameter to inject arbitrary JavaScript code, which can be executed whenever another user accesses the affected page. Detection of this vulnerability involves confirming the presence of this unsanitized parameter and observing the execution of the injected script in a controlled test environment. Effective exploitation requires knowledge of script injection techniques and the ability to manipulate HTTP requests that are compatible with osTicket's response structure.

Exploiting this XSS vulnerability leads to several potential negative impacts. Attackers could gain access to sensitive information, such as session cookies, that are used to authenticate users to compromised systems. This can precipitate unauthorized data access or modifications without the victim's consent or knowledge. Additionally, it opens the platform to further security breaches, as attackers might redirect users to malicious sites or leverage XSS to launch more complex attacks. Compromised user trust and data integrity are risks associated with successful XSS exploitation. Organizations must therefore mitigate this vulnerability to maintain the security of their customer support infrastructure.

REFERENCES

• https://blog.securityevaluators.com/vulnerabilities-found-in-popular-ticketing-system-dd273bda229c
• https://nvd.nist.gov/vuln/detail/CVE-2018-7193