CVE-2018-12584
📋 TL;DR
This is a critical buffer overflow vulnerability in reSIProcate's TLS communication handling that allows remote attackers to cause denial of service or potentially execute arbitrary code. It affects reSIProcate versions through 1.10.2 when TLS is enabled. Systems using reSIProcate for SIP communication with TLS are vulnerable.
💻 Affected Systems
- reSIProcate
📦 What is this software?
Resiprocate by Resiprocate
⚠️ Risk & Real-World Impact
Worst Case
Remote code execution with SYSTEM/root privileges leading to complete system compromise
Likely Case
Denial of service causing SIP communication disruption and service unavailability
If Mitigated
No impact if TLS is disabled or systems are patched/isolated
🎯 Exploit Status
Public exploit details available in security advisories. Remote exploitation requires sending specially crafted TLS packets to vulnerable systems.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 1.10.3 and later
Vendor Advisory: https://github.com/resiprocate/resiprocate/commit/2cb291191c93c7c4e371e22cb89805a5b31d6608
Restart Required: Yes
Instructions:
1. Update reSIProcate to version 1.10.3 or later. 2. Apply the patch from the GitHub commit. 3. Restart all reSIProcate services. 4. Verify TLS communication functions correctly after patching.
🔧 Temporary Workarounds
Disable TLS
allTemporarily disable TLS communication in reSIProcate configuration
Edit reSIProcate config to set TLS disabled or use plain SIP
Network isolation
linuxRestrict network access to reSIProcate services
iptables -A INPUT -p tcp --dport 5061 -j DROP
firewall-cmd --permanent --add-rich-rule='rule family="ipv4" source address="0.0.0.0/0" port port="5061" protocol="tcp" reject'
🧯 If You Can't Patch
- Implement strict network segmentation to isolate vulnerable systems
- Deploy intrusion prevention systems with buffer overflow detection rules
🔍 How to Verify
Check if Vulnerable:
Check reSIProcate version and TLS configuration. If version ≤1.10.2 and TLS enabled, system is vulnerable.Check Version:
resiprocate --version or check installed package versionVerify Fix Applied:
Verify reSIProcate version is ≥1.10.3 and test TLS communication functionality📡 Detection & Monitoring
Log Indicators:
- ConnectionBase::preparseNewBytes errors
- TLS handshake failures
- Process crashes with segmentation faults
Network Indicators:
- Unusual TLS packet patterns to port 5061
- Multiple connection attempts with malformed TLS data
SIEM Query:
source="reSIProcate" AND (error OR crash OR segmentation) OR dest_port=5061 AND protocol="TLS" AND abnormal_packet_size🔗 References
- http://joachimdezutter.webredirect.org/advisory.html
- http://seclists.org/bugtraq/2018/Aug/14
- https://github.com/resiprocate/resiprocate/commit/2cb291191c93c7c4e371e22cb89805a5b31d6608
- https://lists.debian.org/debian-lts-announce/2018/07/msg00031.html
- https://lists.debian.org/debian-lts-announce/2021/12/msg00029.html
- https://packetstormsecurity.com/files/148856/reSIProcate-1.10.2-Heap-Overflow.html
- https://www.exploit-db.com/exploits/45174/
- http://joachimdezutter.webredirect.org/advisory.html
- http://seclists.org/bugtraq/2018/Aug/14
- https://github.com/resiprocate/resiprocate/commit/2cb291191c93c7c4e371e22cb89805a5b31d6608
- https://lists.debian.org/debian-lts-announce/2018/07/msg00031.html
- https://lists.debian.org/debian-lts-announce/2021/12/msg00029.html
- https://packetstormsecurity.com/files/148856/reSIProcate-1.10.2-Heap-Overflow.html
- https://www.exploit-db.com/exploits/45174/
