CVE-2025-2014 in Cobalt
Summary
by MITRE • 03/11/2025
Ashlar-Vellum Cobalt VS File Parsing Use of Uninitialized Variable Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Ashlar-Vellum Cobalt. 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 VS files. The issue results from the lack of proper initialization of memory prior to accessing it. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-25235.
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Analysis
by VulDB Data Team • 08/08/2025
The CVE-2025-2014 vulnerability represents a critical use of uninitialized variable flaw within the Ashlar-Vellum Cobalt VS file parsing functionality that enables remote code execution. This vulnerability resides in the software's handling of Visual Studio project files and manifests as improper memory initialization during file parsing operations. The flaw occurs when the application processes maliciously crafted VS files without adequate validation of memory states, creating a pathway for attackers to inject and execute arbitrary code within the target system's context. The vulnerability specifically affects installations of Ashlar-Vellum Cobalt where VS files are processed, making it particularly dangerous in environments where developers frequently open project files from untrusted sources. The security implications extend beyond simple code execution as this vulnerability can be leveraged to escalate privileges and establish persistent access to compromised systems.
The technical root cause of this vulnerability aligns with CWE-457, which describes the use of uninitialized variables in software applications. When the Cobalt application parses VS files, it fails to properly initialize memory locations before accessing them, creating a condition where uninitialized memory values are used in subsequent operations. This uninitialized memory may contain remnants of previous data or random values that can be manipulated by attackers to control program execution flow. The vulnerability requires user interaction to be exploited, meaning that victims must either visit a malicious webpage or open a specially crafted malicious file containing the vulnerable VS file format. This user interaction requirement makes the attack vector more targeted but also more difficult to detect through automated means, as it relies on social engineering or trusted file delivery mechanisms.
The operational impact of this vulnerability extends significantly beyond immediate code execution capabilities. Attackers can leverage this flaw to gain full control over affected systems, potentially leading to data breaches, system compromise, and lateral movement within network environments. The vulnerability's remote execution capability means that attackers can exploit it from anywhere on the internet without requiring physical access to target systems. This makes it particularly attractive for nation-state actors or organized cybercriminal groups seeking to establish persistent backdoors in development environments where Cobalt software is commonly used. The context of development tools makes this vulnerability especially dangerous as developers often work with files from multiple sources and may not always verify the integrity of project files before opening them.
Mitigation strategies for CVE-2025-2014 should focus on both immediate patching and operational security improvements. Organizations must prioritize applying vendor-provided security updates as soon as they become available, as this vulnerability has been identified and tracked by the Zero Day Initiative under ZDI-CAN-25235. System administrators should implement strict file validation procedures and sandboxing mechanisms for VS file processing, particularly in development environments where the risk is highest. Network segmentation and monitoring should be enhanced to detect suspicious file access patterns and potential exploitation attempts. The vulnerability's alignment with ATT&CK technique T1059.007 for command and script interpreter indicates that attackers may attempt to establish persistence through command execution, making defensive measures such as application whitelisting and process monitoring essential. Additionally, regular security awareness training for developers can help reduce the risk of successful exploitation through social engineering tactics that rely on users opening malicious files.