CVE-2023-43323 in mooSocial
Summary
by MITRE • 10/25/2023
mooSocial 3.1.8 is vulnerable to external service interaction on post function. When executed, the server sends a HTTP and DNS request to external server. The Parameters effected are multiple - messageText, data[wall_photo], data[userShareVideo] and data[userShareLink].
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Analysis
by VulDB Data Team • 09/25/2024
The vulnerability identified as CVE-2023-43323 affects mooSocial version 3.1.8 and represents a significant security flaw involving unintended external service interactions during post function execution. This issue manifests when the server processes user-generated content through the post function, automatically initiating HTTP and DNS requests to external servers without proper validation or authorization. The vulnerability stems from insufficient input sanitization and lacks proper restrictions on external resource access, creating a potential attack vector for malicious actors to exploit.
The technical implementation of this flaw occurs within the post processing functionality where multiple parameters trigger external communications. Specifically the messageText parameter, along with data[wall_photo], data[userShareVideo], and data[userShareLink] fields all contribute to this vulnerability. When these parameters contain specially crafted input, the server executes HTTP and DNS queries to remote endpoints, effectively creating an unintended communication channel that bypasses normal security controls. This behavior aligns with CWE-918, which addresses server-side request forgery vulnerabilities where applications fail to properly validate and restrict external resource access.
The operational impact of this vulnerability extends beyond simple information disclosure, as it creates potential pathways for command and control communications, data exfiltration, and further exploitation. Attackers can leverage this flaw to establish covert channels, perform reconnaissance on internal network resources, or redirect traffic to malicious endpoints. The vulnerability also enables potential denial of service attacks by overwhelming external services with requests or creating resource exhaustion scenarios through excessive external communications.
Security professionals should consider this vulnerability in the context of the ATT&CK framework, particularly under the T1071.004 technique for application layer protocol: DNS and T1071.001 for application layer protocol: web protocols. The vulnerability creates opportunities for attackers to establish persistence through external command and control infrastructure. Mitigation strategies should focus on implementing strict input validation and sanitization for all user-supplied parameters, particularly those that may trigger external communications. Organizations should also deploy network monitoring solutions to detect unauthorized external communications and implement proper access controls to restrict outbound network connections from the affected server.
The remediation approach requires immediate patching of the mooSocial application to version 3.1.9 or later, which should address the improper external service interaction. Additionally, implementing proper parameter validation and sanitization measures will prevent malicious input from triggering unintended external communications. Network-level protections including firewall rules and outbound traffic filtering should be configured to restrict unnecessary external communications. Security teams should also conduct thorough code reviews to identify similar patterns within the application that might create additional attack vectors, as this vulnerability demonstrates a potential architectural weakness in how external service interactions are handled within the application's post processing functions.