Overview

This report discusses CVE-2025-57774, a high-severity vulnerability affecting all versions of Digilent DASYLab. The vulnerability exposes systems to potential compromise and data leakage through out of bounds write due to improper bounds checking. It primarily affects users of the DASYLab software and is of significant concern due to its potential to allow arbitrary code execution.

Vulnerability Summary

CVE ID: CVE-2025-57774
Severity: High, CVSS Score 7.8
Attack Vector: Opening a specially crafted DSB file
Privileges Required: User-level
User Interaction: Required
Impact: Arbitrary code execution leading to potential system compromise or data leakage

Affected Products

Product | Affected Versions

Digilent DASYLab | All versions

How the Exploit Works

The vulnerability lies in the DASYLab software’s handling of DSB files. An attacker can craft a malicious DSB file that, when opened by a user, exploits an out of bounds write vulnerability due to improper bounds checking. This can result in invalid data being parsed, and potentially, arbitrary code execution. Consequently, an attacker could potentially gain control of the system or exfiltrate sensitive data.

Conceptual Example Code

Here’s a conceptual example of how the vulnerability might be exploited. This is not actual exploit code, but rather an illustration of the concept:

# Pseudo code representing a specially crafted DSB file
dsb_file = open("malicious.dsb", "w")
buffer = "A" * 5000  # Excessive data leading to out of bounds write
payload = buffer + "malicious code"  # The arbitrary code to be executed
dsb_file.write(payload)
dsb_file.close()

This pseudo code creates a malicious DSB file that contains a string of data exceeding the bounds that DASYLab expects, followed by the attacker’s malicious code. When a user opens this file in DASYLab, the software’s lack of proper bounds checking leads to a buffer overflow, allowing the arbitrary code to be executed.