CVE-2015-5159: Improper Input Validation in kdcproxy
Summary
CVE-2015-5159: Improper Input Validation in kdcproxy. Affects kdcproxy versions < 0.3.2. Fixed in 0.3.2. How to fix ↓
Check if this vulnerability affects your application
Upload a manifest or SBOM and we'll show whether you're affected, plus every other risky package in the same scan.
No signup required · Results in about 60 seconds
Background
kdcproxy is a Python package available on PyPI that provides a Key Distribution Center (KDC) proxy for Kerberos authentication. It allows users to authenticate to a Kerberos KDC using a web browser. The package facilitates the exchange of Kerberos tickets between the client and the KDC. This vulnerability, identified as CVE-2015-5159, relates to improper input validation in kdcproxy.
Vulnerability Detail
The vulnerability in kdcproxy arises from a lack of proper input validation. Specifically, the issue occurs when handling large POST requests. An attacker can exploit this vulnerability by sending a specially crafted large POST request to the affected server. As a result, the server becomes overwhelmed and unable to respond to legitimate requests, leading to a denial of service (DoS) condition. The impact of this vulnerability can be severe, as it can disrupt the availability of the kdcproxy service, potentially affecting the authentication process for users relying on Kerberos authentication.
How To Fix
Minimum fixed version
0.3.2
This is the first release that contains the fix.
pip install --upgrade "kdcproxy==0.3.2"Tip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
There is no known workaround for this vulnerability. It is essential to apply the fix by upgrading to the latest version of the kdcproxy package.
Conclusion
In conclusion, the vulnerability identified as CVE-2015-5159 in the kdcproxy package can lead to a denial of service (DoS) condition when handling large POST requests. To mitigate this vulnerability, it is crucial to upgrade to version 0.3.2 or later of the kdcproxy package. No known workarounds exist for this issue. For further assistance or support in addressing this vulnerability, please contact DevNack.com.
See every vulnerability recorded for kdcproxy →
FAQ
kdcproxy is a Python package that acts as a proxy for Kerberos Key Distribution Center (KDC) authentication. It allows users to authenticate to a KDC using a web browser.
This vulnerability can lead to a denial of service (DoS) condition, causing the affected kdcproxy server to become unresponsive and potentially disrupting the authentication process for users relying on Kerberos authentication.
To fix this vulnerability, it is recommended to upgrade to version 0.3.2 or later of the kdcproxy package. This version includes the necessary fixes to properly validate input and prevent the DoS condition.
There is no known workaround for this vulnerability. It is essential to apply the fix by upgrading to the latest version of the kdcproxy package.
For more information about this vulnerability, you can refer to the CVE-2015-5159 entry or consult the official documentation and support channels for the kdcproxy package.
