CVE-2024-5508 in KeyShot Viewer
Summary
by MITRE • 06/06/2024
Luxion KeyShot Viewer KSP File Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Luxion KeyShot Viewer. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.
The specific flaw exists within the parsing of KSP files. The issue results from the lack of proper validation of user-supplied data, which can result in a write past the end of an allocated buffer. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-22267.
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Analysis
by VulDB Data Team • 08/09/2024
The CVE-2024-5508 vulnerability represents a critical out-of-bounds write flaw in Luxion KeyShot Viewer's handling of KSP files, constituting a remote code execution vulnerability that poses significant risks to affected systems. This vulnerability resides in the file parsing mechanism where the software fails to properly validate user-supplied data during KSP file processing, creating a scenario where malicious input can trigger memory corruption. The flaw specifically manifests when the application attempts to write data beyond the boundaries of allocated memory buffers, a condition that can be exploited by attackers to gain arbitrary code execution privileges within the viewer's operational context. The vulnerability requires user interaction to be exploited, meaning targets must either visit a malicious webpage or open a crafted KSP file, making it particularly dangerous in phishing campaigns or malicious document delivery scenarios.
The technical nature of this vulnerability aligns with CWE-787, which describes out-of-bounds write conditions that occur when a program writes data past the end of a buffer, potentially corrupting adjacent memory locations. This type of vulnerability is classified as a memory safety issue and falls under the broader category of buffer overflow conditions that have historically been exploited for privilege escalation and code execution attacks. The vulnerability's exploitation pathway involves crafting a malicious KSP file that, when processed by the vulnerable KeyShot Viewer, triggers the buffer overflow condition. This condition allows attackers to overwrite critical memory segments including return addresses, function pointers, or other program state information, enabling them to redirect execution flow and inject malicious code. The attack vector is particularly concerning as it leverages the legitimate file processing functionality of the viewer application, making detection more challenging for security systems that might not immediately flag normal file operations as suspicious.
The operational impact of this vulnerability extends beyond simple code execution, as it can potentially enable attackers to establish persistent access to affected systems. When successfully exploited, the vulnerability allows remote code execution in the context of the current process, meaning attackers can run arbitrary commands with the privileges of the KeyShot Viewer application. This capability could be leveraged to install additional malware, establish backdoors, or escalate privileges within the compromised system. The vulnerability's remote exploitability makes it particularly attractive to threat actors who can deliver malicious payloads through web-based attacks or file sharing platforms without requiring physical access to target systems. Security researchers have classified this vulnerability as high-risk due to its remote exploitation potential and the relatively low barrier to successful exploitation, as demonstrated by its assignment to ZDI-CAN-22267, indicating it has been recognized and tracked by vulnerability databases.
Organizations and users should implement immediate mitigations to protect against exploitation of this vulnerability, including updating to the latest version of Luxion KeyShot Viewer where the issue has been addressed through proper input validation and buffer boundary checks. System administrators should consider implementing application whitelisting policies that restrict execution of unauthorized software, particularly in environments where users may encounter untrusted files or websites. Network-based protections such as web application firewalls and content filtering systems can help detect and block malicious KSP file deliveries, while endpoint protection solutions should be configured to monitor for unusual file processing activities that might indicate exploitation attempts. The vulnerability's requirement for user interaction means that security awareness training for personnel can significantly reduce risk exposure, as users should be educated about the dangers of opening unknown or untrusted files, particularly those encountered through email attachments or web downloads. Additionally, regular vulnerability assessments and penetration testing should be conducted to identify potential exposure points and ensure that security controls remain effective against evolving attack techniques targeting similar memory safety vulnerabilities.