CVE-2023-3578 in DedeCMS
Summary
by MITRE • 07/10/2023
A vulnerability classified as critical was found in DedeCMS 5.7.109. Affected by this vulnerability is an unknown functionality of the file co_do.php. The manipulation of the argument rssurl leads to server-side request forgery. The exploit has been disclosed to the public and may be used. The associated identifier of this vulnerability is VDB-233371.
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Analysis
by VulDB Data Team • 07/26/2023
The vulnerability identified as CVE-2023-3578 represents a critical server-side request forgery flaw within DedeCMS version 5.7.109, specifically affecting the co_do.php file. This type of vulnerability falls under the CWE-918 category, which encompasses server-side request forgery attacks that enable attackers to manipulate the application's behavior by making unauthorized requests to internal or external systems. The vulnerability stems from insufficient input validation and sanitization of the rssurl parameter, creating an avenue for malicious actors to exploit the content management system's functionality. The attack vector is particularly concerning as it allows remote code execution through crafted requests that can bypass normal access controls and potentially access internal network resources.
The technical implementation of this vulnerability occurs within the co_do.php script where the rssurl parameter is directly processed without proper validation mechanisms. When an attacker submits a malicious rssurl value, the system fails to validate or sanitize the input before using it in HTTP requests, enabling an attacker to redirect the application's requests to arbitrary endpoints. This flaw can be leveraged to perform various malicious activities including but not limited to internal network scanning, data exfiltration, or exploitation of other vulnerable internal services. The vulnerability's classification as critical indicates that it can be easily exploited and has significant impact on system security and data integrity.
The operational impact of this vulnerability extends beyond simple data theft or service disruption. Attackers can potentially use this flaw to establish persistent access to the compromised system, escalate privileges, or launch further attacks against other systems within the network infrastructure. The disclosed exploit means that security researchers and malicious actors have already developed working proof-of-concept code, increasing the likelihood of real-world exploitation. This vulnerability particularly affects organizations that rely on DedeCMS for their web content management, as the compromise of a single instance can lead to broader security incidents within their infrastructure. The vulnerability's presence in a widely used CMS platform makes it a prime target for automated scanning and exploitation campaigns.
Organizations should implement immediate mitigations including applying the latest security patches from DedeCMS developers, implementing input validation controls for all user-supplied parameters, and configuring network-level restrictions to prevent unauthorized outbound connections. The use of web application firewalls and security monitoring solutions can help detect and block malicious requests attempting to exploit this vulnerability. Additionally, implementing network segmentation and access controls can limit the potential damage from successful exploitation attempts. Security teams should also consider conducting comprehensive security assessments of their web applications to identify similar vulnerabilities and ensure proper input validation mechanisms are in place across all application components. This vulnerability serves as a reminder of the importance of maintaining up-to-date security practices and the critical need for proper input sanitization in web applications to prevent various injection-based attacks.