CVE-2023-53879
BaseFortify
Publication date: 2025-12-15
Last updated on: 2025-12-18
Assigner: VulnCheck
Description
Description
CVSS Scores
EPSS Scores
| Probability: | |
| Percentile: |
Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| eyemaxsystems | nvclient | 5.0 |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-787 | The product writes data past the end, or before the beginning, of the intended buffer. |
| CWE-121 | A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function). |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
CVE-2023-53879 is a stack-based buffer overflow vulnerability in NVClient version 5.0. It occurs in the user configuration contact field, where an attacker can paste a specially crafted payload that overwrites up to 846 bytes of stack memory. This overflow causes the application to crash, resulting in a denial of service (DoS) condition. The attack requires local access and user interaction. [1, 2]
How can this vulnerability impact me? :
This vulnerability can cause NVClient 5.0 to crash when a malicious payload is pasted into the contact field, leading to a denial of service (DoS) condition. This means legitimate users may be unable to use the application until it is restarted or fixed, potentially disrupting operations that rely on NVClient. [1, 2]
How can this vulnerability be detected on my network or system? Can you suggest some commands?
This vulnerability can be detected by attempting to reproduce the crash condition locally on the NVClient 5.0 application. Specifically, create a file containing 846 'A' characters (e.g., using a command like `python -c "print('A'*846)" > exploit.txt`), then launch NVClient, navigate to Config > User > Add users, and paste the contents of this file into the Contact field. If the application crashes upon submitting, the vulnerability is present. There are no network detection commands since the exploit is local and requires user interaction. [2]
What immediate steps should I take to mitigate this vulnerability?
Immediate mitigation steps include avoiding pasting or entering excessively long inputs into the Contact field in NVClient 5.0 to prevent triggering the buffer overflow. Restrict user access to the application to trusted users only, and monitor for crashes related to user configuration changes. Applying any available patches or updates from the vendor once released is also recommended. [1, 2]