CVE-2022-4958 in redbbs
Summary
by MITRE • 01/11/2024
A vulnerability classified as problematic has been found in qkmc-rk redbbs 1.0. Affected is an unknown function of the component Post Handler. The manipulation of the argument title leads to cross site scripting. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used. The identifier of this vulnerability is VDB-250236.
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Analysis
by VulDB Data Team • 01/28/2024
This vulnerability resides within the qkmc-rk redbbs 1.0 software platform, specifically affecting the Post Handler component where an insecure handling of user-supplied input occurs. The flaw manifests when the title parameter is processed without adequate sanitization or validation, creating an opportunity for malicious actors to inject arbitrary JavaScript code into the application's response. This cross site scripting vulnerability represents a critical security weakness that allows attackers to execute scripts in the context of other users' browsers, potentially leading to session hijacking, credential theft, or unauthorized actions within the application. The vulnerability's classification as remotely exploitable means that attackers can leverage this flaw without requiring physical access to the system, making it particularly dangerous in web-based environments where the software is publicly accessible.
The technical implementation of this vulnerability follows established patterns of reflected cross site scripting attacks where user input flows directly into the application's output without proper encoding or validation. The title argument serves as the attack vector, and when processed through the Post Handler component, it fails to implement adequate input sanitization measures. This weakness creates a persistent security gap that aligns with common weakness enumerations such as CWE-79, which specifically addresses cross site scripting vulnerabilities. The vulnerability's exploitability is further enhanced by the fact that it has been publicly disclosed, meaning that threat actors can readily access information about the specific flaw and develop or obtain working exploits. This public availability of exploitation details significantly increases the risk to systems running the affected software version.
The operational impact of this vulnerability extends beyond simple script execution, potentially enabling attackers to manipulate the application's behavior and compromise user sessions. When exploited, the XSS vulnerability allows attackers to steal cookies, session tokens, or other sensitive information that users might have in their browsers. The attack can be delivered through various means including malicious links sent via email or social media, or by embedding the exploit within forum posts or comments that other users might click. This creates a multi-layered attack surface where even users who are not directly targeted can become victims when they interact with malicious content. The vulnerability's presence in a bulletin board system particularly amplifies the risk since such platforms typically contain sensitive user information and allow for extensive user interaction that can be exploited.
Mitigation strategies for this vulnerability must focus on implementing proper input validation and output encoding mechanisms within the Post Handler component. The most effective approach involves sanitizing all user-supplied input, particularly the title parameter, before processing or displaying it within the application. This should include implementing proper HTML encoding of special characters and utilizing content security policies to limit the execution of unauthorized scripts. Organizations should also consider implementing a web application firewall to detect and block malicious input patterns. The software vendor should release a patched version that addresses the input handling issue, and system administrators must ensure prompt deployment of updates. Additionally, regular security assessments and input validation testing should be conducted to identify similar vulnerabilities in other components of the application. This vulnerability demonstrates the critical importance of secure coding practices and proper input validation in preventing cross site scripting attacks, aligning with security frameworks that emphasize the need for defense in depth and robust application security controls.