Overview
A critical vulnerability, CVE-2023-52289, has been identified in the flaskcode package through 0.0.8 for Python. This flaw allows an attacker to execute an unauthenticated directory traversal, potentially leading to system compromise or data leakage. The vulnerability is particularly concerning due to its potential impact on organizations using this package, and its relatively high severity score.
Vulnerability Summary
CVE ID: CVE-2023-52289
Severity: High (7.5)
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: Potential system compromise or data leakage
Affected Products
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Product | Affected Versions
Flaskcode Package for Python | Up to and including 0.0.8
How the Exploit Works
The exploit takes advantage of a flaw in the flaskcode package, which fails to correctly validate file paths in a POST request to the /update-resource-data/
Conceptual Example Code
The following example illustrates how the vulnerability might be exploited, by sending a malicious POST request:
POST /update-resource-data/../../etc/passwd HTTP/1.1
Host: target.example.com
Content-Type: application/json
{ "data": "malicious_data" }In this example, the attacker is attempting to overwrite the /etc/passwd file, which could allow them to gain unauthorized access to the system.
Mitigation
Users are strongly advised to apply the vendor’s patch as soon as it becomes available. In the interim, a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can be used to temporarily mitigate the risk by detecting and blocking attempts to exploit this vulnerability.
