CVE-2025-9100
📋 TL;DR
This vulnerability allows attackers to bypass authentication in My-Blog 1.0.0 by capturing and replaying authentication data. It affects all users running the vulnerable version of My-Blog. Attackers can exploit this remotely without valid credentials.
💻 Affected Systems
- zhenfeng13 My-Blog
📦 What is this software?
My Blog by Zhenfeng13
⚠️ Risk & Real-World Impact
Worst Case
Attackers gain unauthorized administrative access, allowing them to modify blog content, delete posts, or compromise the entire system.
Likely Case
Attackers post unauthorized comments, deface content, or perform limited unauthorized actions within the blog system.
If Mitigated
With proper network controls and monitoring, impact is limited to attempted attacks that are detected and blocked.
🎯 Exploit Status
Exploit requires capturing authentication data and replaying it, but has been publicly disclosed.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check GitHub repository for updates
Vendor Advisory: https://github.com/ZHENFENG13/My-Blog/issues/149
Restart Required: No
Instructions:
1. Monitor the GitHub repository for patches. 2. Apply any available security updates. 3. Verify the fix by testing authentication mechanisms.
🔧 Temporary Workarounds
Disable comment functionality
allTemporarily disable the vulnerable comment handler to prevent exploitation
Modify configuration to disable /blog/comment endpoint
🧯 If You Can't Patch
- Implement strong network segmentation to isolate the blog system
- Deploy web application firewall with authentication bypass protection rules
🔍 How to Verify
Check if Vulnerable:
Check if running My-Blog version 1.0.0 and test authentication replay on /blog/comment endpointCheck Version:
Check package.json or application configuration for version informationVerify Fix Applied:
Test that authentication replay attacks no longer work on the comment endpoint📡 Detection & Monitoring
Log Indicators:
- Multiple failed authentication attempts followed by successful access
- Unusual comment posting patterns from unexpected IPs
Network Indicators:
- Repeated authentication requests to /blog/comment endpoint
- Unusual traffic patterns to comment functionality
SIEM Query:
source="my-blog" AND (url="/blog/comment" AND status=200) AND user_agent="*" | stats count by src_ip🔗 References
- https://github.com/ZHENFENG13/My-Blog/issues/149
- https://github.com/ZHENFENG13/My-Blog/issues/149#issue-3265307853
- https://vuldb.com/?ctiid.320422
- https://vuldb.com/?id.320422
- https://vuldb.com/?submit.628097
- https://github.com/ZHENFENG13/My-Blog/issues/149
- https://github.com/ZHENFENG13/My-Blog/issues/149#issue-3265307853
