CVE-2018-0510
📋 TL;DR
A buffer overflow vulnerability in kkcald (epg search result viewer) versions 0.7.19 and earlier allows remote attackers to execute arbitrary code or cause denial of service. This affects systems running vulnerable versions of kkcald, particularly those exposed to untrusted network input.
💻 Affected Systems
- kkcald (epg search result viewer)
📦 What is this software?
Kkcald by Kkcald Project
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution with full system compromise, allowing attackers to install malware, steal data, or pivot to other systems.
Likely Case
Denial of service causing kkcald service crashes and disruption of EPG search functionality.
If Mitigated
Limited impact if service runs with minimal privileges and network exposure is restricted.
🎯 Exploit Status
CVSS 9.8 indicates trivial exploitation with high impact, though specific exploit vectors are unspecified in public sources.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 0.7.20 or later
Vendor Advisory: http://dbit.web.fc2.com/
Restart Required: Yes
Instructions:
1. Download latest version from http://dbit.web.fc2.com/ 2. Stop kkcald service 3. Install updated version 4. Restart service
🔧 Temporary Workarounds
Network isolation
linuxRestrict network access to kkcald service using firewall rules
iptables -A INPUT -p tcp --dport [kkcald_port] -j DROP
iptables -A INPUT -p udp --dport [kkcald_port] -j DROP
Service disablement
linuxTemporarily disable kkcald service if not essential
systemctl stop kkcald
systemctl disable kkcald
🧯 If You Can't Patch
- Implement strict network segmentation to isolate vulnerable systems
- Run kkcald with minimal privileges using non-root user accounts
🔍 How to Verify
Check if Vulnerable:
Check kkcald version: kkcald --version or check package managerCheck Version:
kkcald --version 2>&1 | head -1Verify Fix Applied:
Verify version is 0.7.20 or later and service is running without crashes📡 Detection & Monitoring
Log Indicators:
- kkcald service crashes
- segmentation fault errors in system logs
- unusual network connections to kkcald port
Network Indicators:
- Unusual traffic patterns to kkcald service port
- Exploit-like payloads in network traffic
SIEM Query:
source="systemd" AND "kkcald" AND ("segmentation fault" OR "crash" OR "core dumped")