CVE-2014-8650
📋 TL;DR
CVE-2014-8650 is an authentication bypass vulnerability in python-requests-kerberos versions up to 0.5 that fails to properly implement mutual authentication in Kerberos. This allows attackers to impersonate legitimate servers and intercept or manipulate communications. Systems using python-requests-kerberos for authentication in Python applications are affected.
💻 Affected Systems
- python-requests-kerberos
📦 What is this software?
Requests Kerberos by Requests Kerberos Project
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of authentication system allowing man-in-the-middle attacks, credential theft, and unauthorized access to protected resources.
Likely Case
Authentication bypass leading to unauthorized data access or service impersonation in environments using Kerberos authentication.
If Mitigated
Limited impact with proper network segmentation, certificate pinning, and additional authentication layers.
🎯 Exploit Status
Exploitation requires network access and understanding of Kerberos authentication flow.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: python-requests-kerberos 0.6 and later
Vendor Advisory: https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2014-8650
Restart Required: No
Instructions:
1. Update python-requests-kerberos to version 0.6 or later using pip: pip install --upgrade requests-kerberos 2. Verify the update with: pip show requests-kerberos
🔧 Temporary Workarounds
Disable Kerberos authentication
allTemporarily disable Kerberos authentication in affected applications until patched.
Modify application configuration to use alternative authentication methods
Implement certificate pinning
allAdd certificate validation to prevent man-in-the-middle attacks.
Configure SSL/TLS certificate validation in application code
🧯 If You Can't Patch
- Implement network segmentation to isolate systems using python-requests-kerberos
- Add additional authentication layers (multi-factor authentication)
🔍 How to Verify
Check if Vulnerable:
Check python-requests-kerberos version: pip show requests-kerberos | grep VersionCheck Version:
pip show requests-kerberos | grep VersionVerify Fix Applied:
Verify version is 0.6 or higher: pip show requests-kerberos | grep Version📡 Detection & Monitoring
Log Indicators:
- Failed mutual authentication attempts
- Unexpected Kerberos authentication patterns
Network Indicators:
- Unencrypted Kerberos traffic
- Suspicious authentication requests
SIEM Query:
source="kerberos.log" AND (event_type="authentication_failure" OR spn="*requests-kerberos*")🔗 References
- http://www.openwall.com/lists/oss-security/2014/11/07/1
- http://www.securityfocus.com/bid/70909
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2014-8650
- https://security-tracker.debian.org/tracker/CVE-2014-8650
- http://www.openwall.com/lists/oss-security/2014/11/07/1
- http://www.securityfocus.com/bid/70909
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2014-8650
- https://security-tracker.debian.org/tracker/CVE-2014-8650
