Author: Ameeba

Overview

The vulnerability, identified as CVE-2025-9189, is an out of bounds write vulnerability that affects all versions of Digilent DASYLab. This vulnerability is due to improper bounds checking, which results in a large destination address when parsing a .DSB file. It poses a significant threat as it can potentially lead to arbitrary code execution, system compromise, or data leakage.

Vulnerability Summary

CVE ID: CVE-2025-9189
Severity: High (CVSS: 7.8)
Attack Vector: Local
Privileges Required: None
User Interaction: Required
Impact: Arbitrary code execution, Potential system compromise, data leakage

Affected Products

Product | Affected Versions

Digilent DASYLab | All Versions

How the Exploit Works

The exploit works by taking advantage of improper bounds checking in DASYLab when parsing a .DSB file. The attacker crafts a .DSB file with a large destination address, which exceeds the bounds of the allocated memory space. When the victim opens this file, the malicious code embedded in the .DSB file is executed, potentially leading to system compromise or data leakage.

Conceptual Example Code

The following pseudocode illustrates how the exploit might work:

# Pseudocode for CVE-2025-9189 exploit
def create_malicious_dsb():
dsb_file = DSBFile()
dsb_file.destination_address = create_large_address() # Address larger than allocated memory
dsb_file.code = arbitrary_code() # Malicious code
return dsb_file
def arbitrary_code():
# Code that compromises the system or leaks data
pass
def create_large_address():
# Create an address that exceeds the bounds of memory allocated by DASYLab
pass

Remember, this is just a conceptual example and does not represent the actual exploit code. Always ensure that you are taking appropriate steps to protect your systems from such vulnerabilities.

Mitigation Guidance

The most effective mitigation strategy is to apply the patch provided by the vendor. If the patch is not immediately available, temporary mitigation can be achieved by using a Web Application Firewall (WAF) or an Intrusion Detection System (IDS) to detect and block attempts to exploit this vulnerability.

Overview

This report analyzes a critical vulnerability, identified as CVE-2025-9188, found in all versions of Digilent DASYLab. This vulnerability stems from deserialization of untrusted data, potentially resulting in arbitrary code execution. The impact of this vulnerability is significant as it could lead to system compromise or data leakage, thus necessitating immediate attention and mitigation.

Vulnerability Summary

CVE ID: CVE-2025-9188
Severity: High (7.8)
Attack Vector: Local
Privileges Required: User level
User Interaction: Required
Impact: System compromise and potential data leakage

Affected Products

Product | Affected Versions

Digilent DASYLab | All versions

How the Exploit Works

The vulnerability is rooted in the deserialization process in DASYLab. An attacker can craft a malicious DSB file containing untrusted data. When a user opens this file in DASYLab, the software deserializes the untrusted data. This activity can lead to an arbitrary code execution within the context of the application. Therefore, an attacker could potentially take control of the system or leak sensitive data.

Conceptual Example Code

A hypothetical example of how an attacker might exploit this vulnerability could look something like this:

# Create a malicious DSB file
echo "malicious_payload" > exploit.dsb
# The victim opens the malicious DSB file in DASYLab
DASYLab.exe exploit.dsb

In this scenario, “malicious_payload” would be replaced with actual malicious code that exploits the deserialization vulnerability, allowing the attacker to execute arbitrary commands or extract sensitive data.

Mitigation Guidance

Users are advised to apply the official vendor patch to mitigate the vulnerability. If the patch cannot be applied immediately, a Web Application Firewall (WAF) or an Intrusion Detection System (IDS) can be used as a temporary measure to detect and prevent exploitation of this vulnerability. It is also recommended to avoid opening DSB files from untrusted sources.

Overview

This report discusses a critical vulnerability, CVE-2025-57778, affecting all versions of Digilent DASYLab. The vulnerability stems from an out of bounds write error during the parsing of DSB files, which can result in arbitrary code execution. This puts systems and data at significant risk, emphasizing the importance of immediate mitigation.

Vulnerability Summary

CVE ID: CVE-2025-57778
Severity: High (7.8 CVSS Score)
Attack Vector: Local file
Privileges Required: Low
User Interaction: Required
Impact: Potential system compromise and data leakage

Affected Products

Product | Affected Versions

Digilent DASYLab | All versions

How the Exploit Works

The exploit takes advantage of an out of bounds write vulnerability in Digilent DASYLab. A threat actor crafts a malicious DSB file and convinces a user to open it. The software fails to properly check the bounds, leading to an invalid source address and enabling the attacker to execute arbitrary code.

Conceptual Example Code

This is a conceptual example of how a malicious DSB file might be delivered. The specific payload would vary based on the attacker’s objectives.

POST /sendfile HTTP/1.1
Host: target.example.com
Content-Type: application/dsb
{ "file_data": "base64_encoded_malicious_dsb_file" }

Mitigation and Prevention

To mitigate the risk posed by CVE-2025-57778, users should immediately apply the patch provided by the vendor. If the patch cannot be applied immediately, use of a Web Application Firewall (WAF) or an Intrusion Detection System (IDS) can provide temporary mitigation. Users should also be educated on the risks of opening unknown or unexpected DSB files.