CVE-2025-34123 in Studio
Summary
by MITRE • 07/17/2025
A stack-based buffer overflow vulnerability exists in VideoCharge Studio 2.12.3.685 when processing a specially crafted .VSC configuration file. The issue occurs due to improper handling of user-supplied data in the XML 'Name' attribute, leading to an SEH overwrite condition. An attacker can exploit this vulnerability by convincing a user to open a malicious .VSC file, resulting in arbitrary code execution under the context of the user.
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Analysis
by VulDB Data Team • 07/18/2025
This vulnerability represents a critical stack-based buffer overflow in VideoCharge Studio version 2.12.3.685 that stems from inadequate input validation when processing specially crafted .VSC configuration files. The flaw specifically manifests in the handling of the XML 'Name' attribute, where the application fails to properly bounds-check user-supplied data before copying it to a fixed-size stack buffer. This improper memory management creates an exploitable condition that allows attackers to overwrite adjacent memory locations including the structured exception handler (SEH) chain. The vulnerability's exploitation requires social engineering to convince a victim to open a maliciously crafted .VSC file, making it particularly dangerous in targeted attack scenarios where users might be tricked into executing the compromised configuration. The buffer overflow occurs during the parsing phase of the XML document, specifically when the application attempts to store the 'Name' attribute value without adequate validation of its length against the allocated buffer space. This type of vulnerability aligns with CWE-121 Stack-based Buffer Overflow, which is categorized under the broader weakness of insufficient boundary checking in memory operations.
The operational impact of this vulnerability extends beyond simple code execution, as it provides attackers with the ability to run arbitrary code within the security context of the currently logged-in user. This means that if successful, the exploit could lead to complete system compromise, data theft, or further lateral movement within a network. The SEH overwrite condition creates a particularly attractive target for exploitation since it allows attackers to redirect program execution flow through manipulation of the exception handling mechanism. The vulnerability's exploitation vector through file-based delivery makes it especially relevant in environments where users frequently open configuration files from untrusted sources or when users are targeted through phishing campaigns. Security researchers have identified this as a high-risk vulnerability due to its combination of ease of exploitation and the elevated privileges it can grant. The attack surface is limited to users who have the VideoCharge Studio application installed and are susceptible to social engineering attacks, but this represents a significant threat in enterprise environments where such applications are commonly deployed.
Mitigation strategies for this vulnerability should prioritize immediate patching of the VideoCharge Studio application to the latest version that addresses the buffer overflow condition. Organizations should implement strict file validation policies that prevent execution of untrusted .VSC configuration files, particularly those received through email attachments or downloaded from unverified sources. Network-based defenses can include implementing application whitelisting controls that restrict execution of the vulnerable application to trusted environments only. Security teams should also consider deploying endpoint protection solutions that can detect and block attempts to exploit this specific vulnerability through behavioral analysis of file processing activities. The vulnerability demonstrates the importance of input validation and proper memory management in preventing buffer overflow exploits, which aligns with ATT&CK technique T1059.007 for execution through scripting and T1203 for exploitation of vulnerabilities. Organizations should conduct regular vulnerability assessments to identify similar issues in other applications and ensure that all software components are regularly updated to address known security flaws. Additionally, user education programs should emphasize the risks associated with opening configuration files from untrusted sources, as the social engineering aspect of this vulnerability makes it particularly effective in real-world attack scenarios.