Overview
This report examines CVE-2025-57777, a critical out of bounds write vulnerability in Digilent DASYLab’s displ2.dll, affecting all versions of DASYLab. The vulnerability arises due to improper bounds checking when parsing a DSB file, potentially leading to arbitrary code execution.
Vulnerability Summary
CVE ID: CVE-2025-57777
Severity: High (7.8 CVSS Score)
Attack Vector: Local File
Privileges Required: User
User Interaction: Required
Impact: Potential system compromise and data leakage
Affected Products
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Product | Affected Versions
Digilent DASYLab | All versions
How the Exploit Works
The exploit involves a threat actor crafting a malicious DSB file that, when parsed by displ2.dll in DASYLab, allows a write operation outside of the allocated memory bounds. This out-of-bounds write can result in memory corruption, potentially leading to arbitrary code execution. The attacker must convince the user to open this specially crafted DSB file to successfully exploit the vulnerability.
Conceptual Example Code
Here is a conceptual example of how a specially crafted DSB file might contain a payload to exploit this vulnerability:
$ echo 'malicious_payload' > exploit.dsbIn this example, ‘malicious_payload’ represents the data that causes the out-of-bounds write when the `exploit.dsb` file is opened in DASYLab.
Mitigation Guidance
Users are urged to apply the vendor-supplied patch to mitigate this vulnerability. In the absence of a patch, employing a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can provide temporary mitigation by blocking or alerting on attempts to exploit this vulnerability. Users are also advised to be cautious of unsolicited DSB files and to refrain from opening DSB files from untrusted sources.
