CVE-2020-7390 in Sage
Summary
by MITRE • 07/23/2021
Sage X3 Stored XSS Vulnerability on ‘Edit’ Page of User Profile. An authenticated user can pass XSS strings the "First Name," "Last Name," and "Email Address" fields of this web application component. Updates are available for on-premises versions of Version 12 (components shipped with Syracuse 12.10.0 and later) of Sage X3. Other on-premises versions of Sage X3 are unaffected or unsupported by the vendor.
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Analysis
by VulDB Data Team • 07/27/2021
The CVE-2020-7390 vulnerability represents a stored cross-site scripting flaw within Sage X3 version 12, specifically affecting the user profile editing functionality. This security weakness resides in the web application's handling of user input fields including First Name, Last Name, and Email Address during profile modification operations. The vulnerability is classified as a stored XSS issue because malicious payloads injected by authenticated users are permanently stored within the application's database and subsequently executed whenever the affected profile information is rendered to other users. This flaw operates under the Common Weakness Enumeration framework as CWE-79, which categorizes cross-site scripting vulnerabilities, and aligns with ATT&CK technique T1566.001 for initial access through malicious web content. The vulnerability specifically impacts the Edit page component of user profiles, making it particularly dangerous as it allows attackers to inject malicious scripts that can persistently affect multiple users who view the compromised profile information.
The technical implementation of this vulnerability stems from inadequate input validation and output encoding within the Sage X3 application's user profile management system. When authenticated users submit malicious scripts through the First Name, Last Name, or Email Address fields, the application fails to properly sanitize or escape these inputs before storing them in the database. The stored malicious content is then executed in the context of other users' browsers when they access the affected profile information, creating a persistent threat that can affect any user who encounters the compromised data. This vulnerability requires authentication to exploit, meaning an attacker must first obtain valid user credentials, but once achieved, the impact is significant as the malicious code can execute with the privileges of the affected user. The attack vector leverages the web application's trust in user input without proper sanitization, making it a classic example of insecure data handling in web applications.
The operational impact of this vulnerability extends beyond simple script execution, as it can enable sophisticated attack chains that compromise user sessions, steal sensitive data, or facilitate further exploitation within the targeted environment. An attacker could craft malicious payloads that steal session cookies, redirect users to phishing sites, or even execute additional malicious scripts that could lead to privilege escalation or data exfiltration. The stored nature of this vulnerability means that the malicious code remains active even after the initial injection, creating a persistent threat that can affect multiple users over time. This makes the vulnerability particularly dangerous in enterprise environments where user profiles are frequently accessed and where the compromised data could contain sensitive business information. The vulnerability affects on-premises installations of Sage X3 version 12, specifically components shipped with Syracuse 12.10.0 and later, indicating that organizations running older versions or cloud-based deployments may be unaffected, though they should still verify their specific configurations and security posture.
Organizations affected by this vulnerability should immediately implement the vendor-provided updates for on-premises versions of Sage X3, particularly those running version 12 with Syracuse 12.10.0 or later. The remediation process involves applying the official patches and updates released by Sage to address the input validation gaps in the user profile editing functionality. Additionally, security teams should conduct comprehensive assessments of user profile data to identify any already compromised entries that may have been previously injected by attackers. Network monitoring should be enhanced to detect unusual patterns in user profile modifications, and access controls should be reviewed to ensure that only authorized personnel can modify user information. The vulnerability's classification as a stored XSS issue makes it particularly important to implement proper input sanitization measures and output encoding across all user-facing web application components. Organizations should also consider implementing web application firewalls and content security policies to add additional layers of protection against similar vulnerabilities in other application components. Regular security testing and vulnerability assessments should be conducted to identify and remediate similar input validation weaknesses throughout the application ecosystem, ensuring comprehensive protection against persistent threats.