Overview
The security vulnerability recognized as CVE-2023-48383 pertains to the NetVision airPASS system. This flaw, a path traversal vulnerability within a specific URL parameter, can be exploited by unauthenticated remote attackers. The exploit allows illegitimate bypassing of authentication and enables the download of arbitrary system files. This poses a serious threat to the integrity and confidentiality of the affected system’s data.
Vulnerability Summary
CVE ID: CVE-2023-48383
Severity: High (CVSS: 7.5)
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: Possible system compromise and data leakage
Affected Products
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Product | Affected Versions
NetVision airPASS | All versions prior to vendor patch
How the Exploit Works
The path traversal vulnerability in NetVision airPASS is triggered by manipulating the URL parameter. This allows unauthorized access to files and directories that should be restricted. Since the system does not correctly sanitize the input, an attacker can access files beyond the intended directory, which leads to unauthorized disclosure of information and potential system compromise.
Conceptual Example Code
The following is a conceptual example of how the vulnerability might be exploited using a malformed HTTP request:
GET /some/endpoint?file=../../../../etc/passwd HTTP/1.1
Host: target.example.comIn this example, the attacker is trying to access the “/etc/passwd” file, which is located four directories above the intended directory. If the system is vulnerable, it will return the contents of the “/etc/passwd” file, leaking sensitive information.
