Socusoft 3GP Photo Slideshow v8.05 Buffer Overflow in Registration Dialog (CVE-2018-25376)

Socusoft 3GP Photo Slideshow version 8.05 is vulnerable to a buffer overflow in its registration process. This vulnerability, identified as CVE-2018-25376, allows a local attacker to execute arbitrary code on a vulnerable system. The attack involves crafting malicious input in the Registration Name and Registration Key fields of the registration dialog. By exploiting the Structured Exception Handling (SEH) mechanism, the attacker can overwrite the SEH chain and redirect execution flow to attacker-controlled shellcode, leading to the potential for reverse shell access or other malicious activities. This poses a significant risk as it allows for privilege escalation and complete system compromise on affected machines.

Attack Chain

1. The attacker gains local access to a machine with Socusoft 3GP Photo Slideshow 8.05 installed.
2. The attacker opens the Socusoft 3GP Photo Slideshow application.
3. The attacker navigates to the registration dialog within the application.
4. The attacker enters a specially crafted, oversized string into the Registration Name field.
5. The attacker enters a specially crafted, oversized string into the Registration Key field. These strings are designed to overwrite the Structured Exception Handler (SEH) record on the stack.
6. The application attempts to process the registration data, triggering the buffer overflow.
7. The overwritten SEH record redirects execution to attacker-controlled code (shellcode).
8. The shellcode executes, granting the attacker a reverse shell or other arbitrary code execution within the context of the application.

Impact

Successful exploitation of this vulnerability (CVE-2018-25376) allows a local attacker to execute arbitrary code with the privileges of the user running Socusoft 3GP Photo Slideshow 8.05. This can lead to complete system compromise, data theft, or further malicious activities. While the number of affected installations is unknown, the vulnerability poses a significant risk to any system running the vulnerable software.

Recommendation

• Monitor process creations for 3GPPhotoSlideshow.exe spawning unusual child processes or network connections, using a process_creation rule.
• Implement file integrity monitoring for 3GPPhotoSlideshow.exe to detect unauthorized modifications to the executable or related files using a file_event rule.
• Deploy the Sigma rule provided in this brief to your SIEM to detect potential exploitation attempts.
• Consider uninstalling Socusoft 3GP Photo Slideshow 8.05 if it is not essential, or explore alternative, more secure photo slideshow software.