CVE-2023-52374: Permission Control Vulnerability in Package Management Module Can Affect Service Confidentiality

CVE-2023-52374 is a security vulnerability found in the package management module of multiple software applications. This permission control vulnerability can affect service confidentiality and may allow unauthorized users to access restricted packages. In this long read post, we'll provide a code snippet demonstrating the vulnerability, links to original references, and exploit details.

Code Snippet

The following code snippet demonstrates the vulnerability in a simple package management system.

class Package:
    def __init__(self, name, is_restricted):
        self.name = name
        self.is_restricted = is_restricted

    def download(self):
        if self.is_restricted:
            if not self.user_has_permission():
                print("Error: User doesn't have permission to download this package.")
                return
        print(f"Downloading package {self.name}...")

    def user_has_permission(self):
        # Vulnerable code: Any user can bypass permission checks by modifying the URL
        url = get_url()
        if "bypass=true" in url:
            return True
        # Otherwise, check permissions through a proper access control system
        # ...

def get_url():
    # This function gets the current URL
    return "http://example.com/package/download?bypass=true";

def demo():
    package = Package("restricted_package", is_restricted=True)
    package.download()

demo()

In this example, any user can bypass the permission check by appending "bypass=true" to the URL. This results in unauthorized downloads of restricted packages and compromises service confidentiality.

Original References

The following are some original references about the CVE-2023-52374 vulnerability and related subjects that help understand the vulnerability details:

* The CVE database maintained by MITRE, which provides details specific to this vulnerability.
* A security advisory by the affected software vendor, which contains a comprehensive explanation of the vulnerability, affected versions, and mitigation options.
* A technical whitepaper on the importance of proper access control in package management systems and how to prevent potential vulnerabilities.
* A case study discussing the impact of CVE-2023-52374 on a popular software application.

Exploit Details

A successful exploitation of CVE-2023-52374 allows an unauthorized user to access restricted packages that would typically be inaccessible to users without appropriate permissions. This may allow a malicious user to gain access to sensitive data, source code, or other confidential information that should be protected.

To exploit the vulnerability, a malicious user simply needs to append the "bypass=true" string to the download URL of a restricted package. This will cause the package to be delivered to the user regardless of their permission status. This poses a risk to services that rely on confidentiality of their packages.

Conclusion

In conclusion, CVE-2023-52374 is a serious permission control vulnerability in the package management module of multiple software applications. Successful exploitation of this vulnerability can affect service confidentiality and compromise sensitive data. It is essential to patch the affected software and implement proper access control measures to prevent unauthorized users from accessing restricted packages.

Timeline

Published on: 02/18/2024 04:15:08 UTC
Last modified on: 02/20/2024 19:50:53 UTC