CVE-2024-34905
📋 TL;DR
FlyFish v3.0.0 contains a buffer overflow vulnerability in the password parameter on the login page. Attackers can exploit this to cause Denial of Service (DoS) through crafted inputs. Organizations using FlyFish v3.0.0 are affected.
💻 Affected Systems
- FlyFish
📦 What is this software?
Flyfish by Cloudwise
⚠️ Risk & Real-World Impact
Worst Case
Complete service disruption through DoS, potentially leading to extended downtime and service unavailability.
Likely Case
Service disruption and downtime affecting application availability.
If Mitigated
Minimal impact with proper input validation and boundary checks in place.
🎯 Exploit Status
Exploitation requires sending crafted input to the login page, which is typically accessible without authentication.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Not specified
Vendor Advisory: https://github.com/CloudWise-OpenSource/FlyFish/issues/191
Restart Required: No
Instructions:
Check the GitHub issue for updates; consider upgrading to a patched version if available or applying workarounds.
🔧 Temporary Workarounds
Input Validation and Sanitization
allImplement server-side input validation to restrict password length and character set.
N/A - Requires code changes
Web Application Firewall (WAF) Rules
allConfigure WAF to block requests with excessively long password parameters.
N/A - Configure via WAF interface
🧯 If You Can't Patch
- Restrict access to the login page using network ACLs or authentication gateways.
- Monitor for abnormal login attempts and implement rate limiting.
🔍 How to Verify
Check if Vulnerable:
Check if running FlyFish v3.0.0 by reviewing version configuration or deployment manifests.Check Version:
Check application configuration files or deployment scripts for version information.Verify Fix Applied:
Verify upgrade to a non-vulnerable version or test with controlled input to ensure no DoS occurs.📡 Detection & Monitoring
Log Indicators:
- Unusually long password fields in login requests
- Multiple failed login attempts with large payloads
Network Indicators:
- HTTP POST requests to login endpoint with oversized password parameters
SIEM Query:
source="web_logs" AND uri="/login" AND password_length > 100