CVE-2022-32270 in RealPlayer
Summary
by MITRE • 06/03/2022
In Real Player 20.0.7.309 and 20.0.8.310, external::Import() allows download of arbitrary file types and Directory Traversal, leading to Remote Code Execution. This occurs because it is possible to plant executables in the startup folder (DLL planting could also occur).
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Analysis
by VulDB Data Team • 06/06/2022
The vulnerability identified as CVE-2022-32270 affects Real Player versions 20.0.7.309 and 20.0.8.310, representing a critical security flaw that enables remote code execution through improper handling of external file imports. This vulnerability stems from the external::Import() function which permits the download of arbitrary file types without adequate validation or sanitization measures. The flaw creates a dangerous condition where malicious actors can exploit the software's file handling mechanisms to execute arbitrary code on target systems.
The technical implementation of this vulnerability involves directory traversal attacks combined with file download capabilities that allow attackers to place malicious executables in system directories. Specifically, the vulnerability enables attackers to plant executable files in the startup folder, which subsequently gets executed automatically when users log into their systems. This technique leverages DLL planting methods where malicious dynamic link libraries are placed in directories that are automatically searched by the operating system during application execution. The vulnerability falls under CWE-22 for Directory Traversal and CWE-74 for Improper Neutralization of Special Elements in Output Used by a Downstream Component.
The operational impact of CVE-2022-32270 extends beyond simple remote code execution, as it provides attackers with persistent access to compromised systems through the startup folder mechanism. Once successful, attackers can establish backdoors, escalate privileges, and maintain long-term control over affected systems. The vulnerability's exploitation requires minimal user interaction, as the malicious files are automatically executed during system startup, making it particularly dangerous for enterprise environments. This attack vector aligns with ATT&CK technique T1068 for Local Privilege Escalation and T1547.001 for Registry Run Keys for persistence mechanisms.
The security implications of this vulnerability are severe, as it can be exploited remotely without requiring user authentication for the initial attack. Attackers can craft malicious import requests that bypass normal security controls, allowing them to deploy malware payloads that persist across system reboots. The vulnerability affects systems where Real Player is installed and actively used, particularly in corporate environments where users may not be aware of the potential risks associated with the software's file import functionality. Organizations should consider implementing network segmentation and application whitelisting to prevent unauthorized file downloads and execution, while also ensuring that all Real Player installations are updated to patched versions that address this vulnerability. The attack surface is further expanded by the fact that this vulnerability can be triggered through various network-based attack vectors, including web browsing and file sharing scenarios where users might inadvertently download malicious content through the vulnerable import function.