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How CVE-2025-1252 Works
CVE-2025-1252 is a heap-based buffer overflow vulnerability in RTI Connext Professional’s Core Libraries. The flaw occurs when processing malformed data packets, leading to improper bounds checking when handling variables and tags. Attackers can craft specially designed messages to trigger an overflow, corrupting heap memory and potentially allowing arbitrary code execution. Affected versions include Connext Professional 7.4.0 to 7.5.0, 7.0.0 to 7.3.0.7, and 4.4 to 6.1.2.23. The CVSS 4.0 score reflects its critical severity due to remote exploitability and high impact on confidentiality, integrity, and availability.
DailyCVE Form
Platform: RTI Connext Professional
Version: 7.4.0 – 7.5.0
Vulnerability: Heap Overflow
Severity: Critical
Date: 06/05/2025
Prediction: Patch by Q3 2025
What Undercode Say:
Exploitation Analysis
- Exploit Payload: Crafted DDS packets with oversized tags.
- Trigger: Malformed Topic Data in RTPS protocol.
- Impact: RCE or DoS via heap corruption.
Detection & Mitigation
Check vulnerable versions $ connext_professional --version | grep -E "7.[0-4].|6.1.[0-2]|4.4" Temporary mitigation (firewall rule) $ iptables -A INPUT -p udp --dport 7400-7500 -j DROP
Patch Verification
import dds
def check_patch():
try:
dds.check_heap_integrity()
except OverflowError:
print("Vulnerable! Apply RTI patch.")
Debugging (Crash Analysis)
gdb -ex "run" -ex "bt full" --args connext_node malformed_packet.dds
Expected Patch Notes
- Fix: Bounds validation in
rti_dds_core. - Update: Upgrade to 7.5.1 or 6.1.2.24.
Network Monitoring
alert udp any any -> any 7400:7500 (msg:"RTI Connext Exploit Attempt"; content:"|FF FF FF TT|"; sid:1000251252;)
Post-Exploit Forensics
Check for heap corruption artifacts $ strings /proc/$(pidof connext_node)/maps | grep "CORRUPT"
Vendor Advisory
- RTI Security Bulletin: SB-2025-1252 (Q3 2025).
- Workaround: Disable UDP discovery.
Sources:
Reported By: nvd.nist.gov
Extra Source Hub:
Undercode
