CVE-2023-22425 in SHIRASAGI
Summary
by MITRE • 02/24/2023
Stored cross-site scripting vulnerability in Schedule function of SHIRASAGI v1.16.2 and earlier versions allows a remote authenticated attacker to inject an arbitrary script.
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Analysis
by VulDB Data Team • 10/01/2025
The vulnerability identified as CVE-2023-22425 represents a critical stored cross-site scripting flaw within the Schedule function of SHIRASAGI version 1.16.2 and earlier releases. This security weakness resides in the application's handling of user input within its scheduling module, creating a persistent vector for malicious code execution. The vulnerability specifically affects authenticated users who possess sufficient privileges to access and manipulate the scheduling functionality, making it particularly dangerous in environments where administrative or high-privilege accounts are compromised. The flaw enables attackers to inject malicious scripts that persist in the application's database and execute whenever the affected schedule data is rendered to other users. This stored XSS vulnerability falls under the CWE-079 category, which specifically addresses cross-site scripting flaws in web applications where input is not properly sanitized before being included in web pages served to other users.
The technical implementation of this vulnerability stems from inadequate input validation and output encoding mechanisms within the Schedule function's data processing pipeline. When authenticated users submit schedule entries containing malicious script code, the application fails to adequately sanitize or escape this input before storing it in the database. Subsequently, when other users view these schedule entries, the stored malicious code executes within their browser context, potentially leading to session hijacking, credential theft, or further exploitation of the victim's browser environment. The attack vector requires authentication, meaning that an attacker must first obtain valid user credentials or exploit another vulnerability to gain access to the system before being able to leverage this XSS flaw. This characteristic places the vulnerability in the ATT&CK framework under the T1566.001 technique for initial access through valid accounts, while the exploitation itself aligns with T1531 for credential access and potentially T1203 for exploitation of web applications.
The operational impact of this vulnerability extends beyond simple script execution, as it can serve as a launching point for more sophisticated attacks within the target environment. An attacker who successfully exploits this vulnerability could potentially steal session cookies, redirect users to malicious sites, or inject additional malicious content into the application's interface. The persistent nature of stored XSS means that the malicious payload remains active until explicitly removed by administrators, providing attackers with extended opportunities for exploitation. Furthermore, since this vulnerability affects a scheduling function, it could be particularly damaging in enterprise environments where scheduling systems are used for critical business operations, potentially disrupting workflow or providing attackers with access to sensitive organizational information. The affected versions of SHIRASAGI suggest that this vulnerability has existed for some time, indicating that organizations using these older versions face prolonged exposure to this risk without proper mitigation.
Organizations affected by this vulnerability should implement immediate remediation measures including updating to the latest version of SHIRASAGI where the XSS flaw has been patched. The mitigation strategy should encompass comprehensive input validation and output encoding mechanisms to prevent malicious scripts from being stored or executed within the application. Additionally, implementing content security policies and regular security scanning of user input can help detect and prevent exploitation attempts. Network segmentation and monitoring of user activities within the scheduling module can provide early detection of potential exploitation attempts. Security teams should also conduct thorough penetration testing to identify any other potential XSS vulnerabilities within the application and ensure that all user inputs are properly sanitized before being processed or stored. The remediation process should include comprehensive testing to verify that the fix does not introduce regressions in the application's functionality while maintaining the integrity of legitimate user inputs.