Skip to content

Instantly share code, notes, and snippets.

@sh1n0b1
Created July 13, 2015 23:36
Show Gist options
  • Star 95 You must be signed in to star a gist
  • Fork 45 You must be signed in to fork a gist
  • Save sh1n0b1/e2e1a5f63fbec3706123 to your computer and use it in GitHub Desktop.
Save sh1n0b1/e2e1a5f63fbec3706123 to your computer and use it in GitHub Desktop.
linuxprivchecker.py -- a Linux Privilege Escalation Check Script
#!/usr/env python
###############################################################################################################
## [Title]: linuxprivchecker.py -- a Linux Privilege Escalation Check Script
## [Author]: Mike Czumak (T_v3rn1x) -- @SecuritySift
##-------------------------------------------------------------------------------------------------------------
## [Details]:
## This script is intended to be executed locally on a Linux box to enumerate basic system info and
## search for common privilege escalation vectors such as world writable files, misconfigurations, clear-text
## passwords and applicable exploits.
##-------------------------------------------------------------------------------------------------------------
## [Warning]:
## This script comes as-is with no promise of functionality or accuracy. I have no plans to maintain updates,
## I did not write it to be efficient and in some cases you may find the functions may not produce the desired
## results. For example, the function that links packages to running processes is based on keywords and will
## not always be accurate. Also, the exploit list included in this function will need to be updated over time.
## Feel free to change or improve it any way you see fit.
##-------------------------------------------------------------------------------------------------------------
## [Modification, Distribution, and Attribution]:
## You are free to modify and/or distribute this script as you wish. I only ask that you maintain original
## author attribution and not attempt to sell it or incorporate it into any commercial offering (as if it's
## worth anything anyway :)
###############################################################################################################
# conditional import for older versions of python not compatible with subprocess
try:
import subprocess as sub
compatmode = 0 # newer version of python, no need for compatibility mode
except ImportError:
import os # older version of python, need to use os instead
compatmode = 1
# title / formatting
bigline = "================================================================================================="
smlline = "-------------------------------------------------------------------------------------------------"
print bigline
print "LINUX PRIVILEGE ESCALATION CHECKER"
print bigline
print
# loop through dictionary, execute the commands, store the results, return updated dict
def execCmd(cmdDict):
for item in cmdDict:
cmd = cmdDict[item]["cmd"]
if compatmode == 0: # newer version of python, use preferred subprocess
out, error = sub.Popen([cmd], stdout=sub.PIPE, stderr=sub.PIPE, shell=True).communicate()
results = out.split('\n')
else: # older version of python, use os.popen
echo_stdout = os.popen(cmd, 'r')
results = echo_stdout.read().split('\n')
cmdDict[item]["results"]=results
return cmdDict
# print results for each previously executed command, no return value
def printResults(cmdDict):
for item in cmdDict:
msg = cmdDict[item]["msg"]
results = cmdDict[item]["results"]
print "[+] " + msg
for result in results:
if result.strip() != "":
print " " + result.strip()
print
return
def writeResults(msg, results):
f = open("privcheckout.txt", "a");
f.write("[+] " + str(len(results)-1) + " " + msg)
for result in results:
if result.strip() != "":
f.write(" " + result.strip())
f.close()
return
# Basic system info
print "[*] GETTING BASIC SYSTEM INFO...\n"
results=[]
sysInfo = {"OS":{"cmd":"cat /etc/issue","msg":"Operating System","results":results},
"KERNEL":{"cmd":"cat /proc/version","msg":"Kernel","results":results},
"HOSTNAME":{"cmd":"hostname", "msg":"Hostname", "results":results}
}
sysInfo = execCmd(sysInfo)
printResults(sysInfo)
# Networking Info
print "[*] GETTING NETWORKING INFO...\n"
netInfo = {"NETINFO":{"cmd":"/sbin/ifconfig -a", "msg":"Interfaces", "results":results},
"ROUTE":{"cmd":"route", "msg":"Route", "results":results},
"NETSTAT":{"cmd":"netstat -antup | grep -v 'TIME_WAIT'", "msg":"Netstat", "results":results}
}
netInfo = execCmd(netInfo)
printResults(netInfo)
# File System Info
print "[*] GETTING FILESYSTEM INFO...\n"
driveInfo = {"MOUNT":{"cmd":"mount","msg":"Mount results", "results":results},
"FSTAB":{"cmd":"cat /etc/fstab 2>/dev/null", "msg":"fstab entries", "results":results}
}
driveInfo = execCmd(driveInfo)
printResults(driveInfo)
# Scheduled Cron Jobs
cronInfo = {"CRON":{"cmd":"ls -la /etc/cron* 2>/dev/null", "msg":"Scheduled cron jobs", "results":results},
"CRONW": {"cmd":"ls -aRl /etc/cron* 2>/dev/null | awk '$1 ~ /w.$/' 2>/dev/null", "msg":"Writable cron dirs", "results":results}
}
cronInfo = execCmd(cronInfo)
printResults(cronInfo)
# User Info
print "\n[*] ENUMERATING USER AND ENVIRONMENTAL INFO...\n"
userInfo = {"WHOAMI":{"cmd":"whoami", "msg":"Current User", "results":results},
"ID":{"cmd":"id","msg":"Current User ID", "results":results},
"ALLUSERS":{"cmd":"cat /etc/passwd", "msg":"All users", "results":results},
"SUPUSERS":{"cmd":"grep -v -E '^#' /etc/passwd | awk -F: '$3 == 0{print $1}'", "msg":"Super Users Found:", "results":results},
"HISTORY":{"cmd":"ls -la ~/.*_history; ls -la /root/.*_history 2>/dev/null", "msg":"Root and current user history (depends on privs)", "results":results},
"ENV":{"cmd":"env 2>/dev/null | grep -v 'LS_COLORS'", "msg":"Environment", "results":results},
"SUDOERS":{"cmd":"cat /etc/sudoers 2>/dev/null | grep -v '#' 2>/dev/null", "msg":"Sudoers (privileged)", "results":results},
"LOGGEDIN":{"cmd":"w 2>/dev/null", "msg":"Logged in User Activity", "results":results}
}
userInfo = execCmd(userInfo)
printResults(userInfo)
if "root" in userInfo["ID"]["results"][0]:
print "[!] ARE YOU SURE YOU'RE NOT ROOT ALREADY?\n"
# File/Directory Privs
print "[*] ENUMERATING FILE AND DIRECTORY PERMISSIONS/CONTENTS...\n"
fdPerms = {"WWDIRSROOT":{"cmd":"find / \( -wholename '/home/homedir*' -prune \) -o \( -type d -perm -0002 \) -exec ls -ld '{}' ';' 2>/dev/null | grep root", "msg":"World Writeable Directories for User/Group 'Root'", "results":results},
"WWDIRS":{"cmd":"find / \( -wholename '/home/homedir*' -prune \) -o \( -type d -perm -0002 \) -exec ls -ld '{}' ';' 2>/dev/null | grep -v root", "msg":"World Writeable Directories for Users other than Root", "results":results},
"WWFILES":{"cmd":"find / \( -wholename '/home/homedir/*' -prune -o -wholename '/proc/*' -prune \) -o \( -type f -perm -0002 \) -exec ls -l '{}' ';' 2>/dev/null", "msg":"World Writable Files", "results":results},
"SUID":{"cmd":"find / \( -perm -2000 -o -perm -4000 \) -exec ls -ld {} \; 2>/dev/null", "msg":"SUID/SGID Files and Directories", "results":results},
"ROOTHOME":{"cmd":"ls -ahlR /root 2>/dev/null", "msg":"Checking if root's home folder is accessible", "results":results}
}
fdPerms = execCmd(fdPerms)
printResults(fdPerms)
pwdFiles = {"LOGPWDS":{"cmd":"find /var/log -name '*.log' 2>/dev/null | xargs -l10 egrep 'pwd|password' 2>/dev/null", "msg":"Logs containing keyword 'password'", "results":results},
"CONFPWDS":{"cmd":"find /etc -name '*.c*' 2>/dev/null | xargs -l10 egrep 'pwd|password' 2>/dev/null", "msg":"Config files containing keyword 'password'", "results":results},
"SHADOW":{"cmd":"cat /etc/shadow 2>/dev/null", "msg":"Shadow File (Privileged)", "results":results}
}
pwdFiles = execCmd(pwdFiles)
printResults(pwdFiles)
# Processes and Applications
print "[*] ENUMERATING PROCESSES AND APPLICATIONS...\n"
if "debian" in sysInfo["KERNEL"]["results"][0] or "ubuntu" in sysInfo["KERNEL"]["results"][0]:
getPkgs = "dpkg -l | awk '{$1=$4=\"\"; print $0}'" # debian
else:
getPkgs = "rpm -qa | sort -u" # RH/other
getAppProc = {"PROCS":{"cmd":"ps aux | awk '{print $1,$2,$9,$10,$11}'", "msg":"Current processes", "results":results},
"PKGS":{"cmd":getPkgs, "msg":"Installed Packages", "results":results}
}
getAppProc = execCmd(getAppProc)
printResults(getAppProc) # comment to reduce output
otherApps = { "SUDO":{"cmd":"sudo -V | grep version 2>/dev/null", "msg":"Sudo Version (Check out http://www.exploit-db.com/search/?action=search&filter_page=1&filter_description=sudo)", "results":results},
"APACHE":{"cmd":"apache2 -v; apache2ctl -M; httpd -v; apachectl -l 2>/dev/null", "msg":"Apache Version and Modules", "results":results},
"APACHECONF":{"cmd":"cat /etc/apache2/apache2.conf 2>/dev/null", "msg":"Apache Config File", "results":results}
}
otherApps = execCmd(otherApps)
printResults(otherApps)
print "[*] IDENTIFYING PROCESSES AND PACKAGES RUNNING AS ROOT OR OTHER SUPERUSER...\n"
# find the package information for the processes currently running
# under root or another super user
procs = getAppProc["PROCS"]["results"]
pkgs = getAppProc["PKGS"]["results"]
supusers = userInfo["SUPUSERS"]["results"]
procdict = {} # dictionary to hold the processes running as super users
for proc in procs: # loop through each process
relatedpkgs = [] # list to hold the packages related to a process
try:
for user in supusers: # loop through the known super users
if (user != "") and (user in proc): # if the process is being run by a super user
procname = proc.split(" ")[4] # grab the process name
if "/" in procname:
splitname = procname.split("/")
procname = splitname[len(splitname)-1]
for pkg in pkgs: # loop through the packages
if not len(procname) < 3: # name too short to get reliable package results
if procname in pkg:
if procname in procdict:
relatedpkgs = procdict[proc] # if already in the dict, grab its pkg list
if pkg not in relatedpkgs:
relatedpkgs.append(pkg) # add pkg to the list
procdict[proc]=relatedpkgs # add any found related packages to the process dictionary entry
except:
pass
for key in procdict:
print " " + key # print the process name
try:
if not procdict[key][0] == "": # only print the rest if related packages were found
print " Possible Related Packages: "
for entry in procdict[key]:
print " " + entry # print each related package
except:
pass
# EXPLOIT ENUMERATION
# First discover the avaialable tools
print
print "[*] ENUMERATING INSTALLED LANGUAGES/TOOLS FOR SPLOIT BUILDING...\n"
devTools = {"TOOLS":{"cmd":"which awk perl python ruby gcc cc vi vim nmap find netcat nc wget tftp ftp 2>/dev/null", "msg":"Installed Tools", "results":results}}
devTools = execCmd(devTools)
printResults(devTools)
print "[+] Related Shell Escape Sequences...\n"
escapeCmd = {"vi":[":!bash", ":set shell=/bin/bash:shell"], "awk":["awk 'BEGIN {system(\"/bin/bash\")}'"], "perl":["perl -e 'exec \"/bin/bash\";'"], "find":["find / -exec /usr/bin/awk 'BEGIN {system(\"/bin/bash\")}' \\;"], "nmap":["--interactive"]}
for cmd in escapeCmd:
for result in devTools["TOOLS"]["results"]:
if cmd in result:
for item in escapeCmd[cmd]:
print " " + cmd + "-->\t" + item
print
print "[*] FINDING RELEVENT PRIVILEGE ESCALATION EXPLOITS...\n"
# Now check for relevant exploits (note: this list should be updated over time; source: Exploit-DB)
# sploit format = sploit name : {minversion, maxversion, exploitdb#, language, {keywords for applicability}} -- current keywords are 'kernel', 'proc', 'pkg' (unused), and 'os'
sploits= { "2.2.x-2.4.x ptrace kmod local exploit":{"minver":"2.2", "maxver":"2.4.99", "exploitdb":"3", "lang":"c", "keywords":{"loc":["kernel"], "val":"kernel"}},
"< 2.4.20 Module Loader Local Root Exploit":{"minver":"0", "maxver":"2.4.20", "exploitdb":"12", "lang":"c", "keywords":{"loc":["kernel"], "val":"kernel"}},
"2.4.22 "'do_brk()'" local Root Exploit (PoC)":{"minver":"2.4.22", "maxver":"2.4.22", "exploitdb":"129", "lang":"asm", "keywords":{"loc":["kernel"], "val":"kernel"}},
"<= 2.4.22 (do_brk) Local Root Exploit (working)":{"minver":"0", "maxver":"2.4.22", "exploitdb":"131", "lang":"c", "keywords":{"loc":["kernel"], "val":"kernel"}},
"2.4.x mremap() bound checking Root Exploit":{"minver":"2.4", "maxver":"2.4.99", "exploitdb":"145", "lang":"c", "keywords":{"loc":["kernel"], "val":"kernel"}},
"<= 2.4.29-rc2 uselib() Privilege Elevation":{"minver":"0", "maxver":"2.4.29", "exploitdb":"744", "lang":"c", "keywords":{"loc":["kernel"], "val":"kernel"}},
"2.4 uselib() Privilege Elevation Exploit":{"minver":"2.4", "maxver":"2.4", "exploitdb":"778", "lang":"c", "keywords":{"loc":["kernel"], "val":"kernel"}},
"2.4.x / 2.6.x uselib() Local Privilege Escalation Exploit":{"minver":"2.4", "maxver":"2.6.99", "exploitdb":"895", "lang":"c", "keywords":{"loc":["kernel"], "val":"kernel"}},
"2.4/2.6 bluez Local Root Privilege Escalation Exploit (update)":{"minver":"2.4", "maxver":"2.6.99", "exploitdb":"926", "lang":"c", "keywords":{"loc":["proc","pkg"], "val":"bluez"}},
"<= 2.6.11 (CPL 0) Local Root Exploit (k-rad3.c)":{"minver":"0", "maxver":"2.6.11", "exploitdb":"1397", "lang":"c", "keywords":{"loc":["kernel"], "val":"kernel"}},
"MySQL 4.x/5.0 User-Defined Function Local Privilege Escalation Exploit":{"minver":"0", "maxver":"99", "exploitdb":"1518", "lang":"c", "keywords":{"loc":["proc","pkg"], "val":"mysql"}},
"2.6.13 <= 2.6.17.4 sys_prctl() Local Root Exploit":{"minver":"2.6.13", "maxver":"2.6.17.4", "exploitdb":"2004", "lang":"c", "keywords":{"loc":["kernel"], "val":"kernel"}},
"2.6.13 <= 2.6.17.4 sys_prctl() Local Root Exploit (2)":{"minver":"2.6.13", "maxver":"2.6.17.4", "exploitdb":"2005", "lang":"c", "keywords":{"loc":["kernel"], "val":"kernel"}},
"2.6.13 <= 2.6.17.4 sys_prctl() Local Root Exploit (3)":{"minver":"2.6.13", "maxver":"2.6.17.4", "exploitdb":"2006", "lang":"c", "keywords":{"loc":["kernel"], "val":"kernel"}},
"2.6.13 <= 2.6.17.4 sys_prctl() Local Root Exploit (4)":{"minver":"2.6.13", "maxver":"2.6.17.4", "exploitdb":"2011", "lang":"sh", "keywords":{"loc":["kernel"], "val":"kernel"}},
"<= 2.6.17.4 (proc) Local Root Exploit":{"minver":"0", "maxver":"2.6.17.4", "exploitdb":"2013", "lang":"c", "keywords":{"loc":["kernel"], "val":"kernel"}},
"2.6.13 <= 2.6.17.4 prctl() Local Root Exploit (logrotate)":{"minver":"2.6.13", "maxver":"2.6.17.4", "exploitdb":"2031", "lang":"c", "keywords":{"loc":["kernel"], "val":"kernel"}},
"Ubuntu/Debian Apache 1.3.33/1.3.34 (CGI TTY) Local Root Exploit":{"minver":"4.10", "maxver":"7.04", "exploitdb":"3384", "lang":"c", "keywords":{"loc":["os"], "val":"debian"}},
"Linux/Kernel 2.4/2.6 x86-64 System Call Emulation Exploit":{"minver":"2.4", "maxver":"2.6", "exploitdb":"4460", "lang":"c", "keywords":{"loc":["kernel"], "val":"kernel"}},
"< 2.6.11.5 BLUETOOTH Stack Local Root Exploit":{"minver":"0", "maxver":"2.6.11.5", "exploitdb":"4756", "lang":"c", "keywords":{"loc":["proc","pkg"], "val":"bluetooth"}},
"2.6.17 - 2.6.24.1 vmsplice Local Root Exploit":{"minver":"2.6.17", "maxver":"2.6.24.1", "exploitdb":"5092", "lang":"c", "keywords":{"loc":["kernel"], "val":"kernel"}},
"2.6.23 - 2.6.24 vmsplice Local Root Exploit":{"minver":"2.6.23", "maxver":"2.6.24", "exploitdb":"5093", "lang":"c", "keywords":{"loc":["os"], "val":"debian"}},
"Debian OpenSSL Predictable PRNG Bruteforce SSH Exploit":{"minver":"0", "maxver":"99", "exploitdb":"5720", "lang":"python", "keywords":{"loc":["os"], "val":"debian"}},
"Linux Kernel < 2.6.22 ftruncate()/open() Local Exploit":{"minver":"0", "maxver":"2.6.22", "exploitdb":"6851", "lang":"c", "keywords":{"loc":["kernel"], "val":"kernel"}},
"< 2.6.29 exit_notify() Local Privilege Escalation Exploit":{"minver":"0", "maxver":"2.6.29", "exploitdb":"8369", "lang":"c", "keywords":{"loc":["kernel"], "val":"kernel"}},
"2.6 UDEV Local Privilege Escalation Exploit":{"minver":"2.6", "maxver":"2.6.99", "exploitdb":"8478", "lang":"c", "keywords":{"loc":["proc","pkg"], "val":"udev"}},
"2.6 UDEV < 141 Local Privilege Escalation Exploit":{"minver":"2.6", "maxver":"2.6.99", "exploitdb":"8572", "lang":"c", "keywords":{"loc":["proc","pkg"], "val":"udev"}},
"2.6.x ptrace_attach Local Privilege Escalation Exploit":{"minver":"2.6", "maxver":"2.6.99", "exploitdb":"8673", "lang":"c", "keywords":{"loc":["kernel"], "val":"kernel"}},
"2.6.29 ptrace_attach() Local Root Race Condition Exploit":{"minver":"2.6.29", "maxver":"2.6.29", "exploitdb":"8678", "lang":"c", "keywords":{"loc":["kernel"], "val":"kernel"}},
"Linux Kernel <=2.6.28.3 set_selection() UTF-8 Off By One Local Exploit":{"minver":"0", "maxver":"2.6.28.3", "exploitdb":"9083", "lang":"c", "keywords":{"loc":["kernel"], "val":"kernel"}},
"Test Kernel Local Root Exploit 0day":{"minver":"2.6.18", "maxver":"2.6.30", "exploitdb":"9191", "lang":"c", "keywords":{"loc":["kernel"], "val":"kernel"}},
"PulseAudio (setuid) Priv. Escalation Exploit (ubu/9.04)(slack/12.2.0)":{"minver":"2.6.9", "maxver":"2.6.30", "exploitdb":"9208", "lang":"c", "keywords":{"loc":["pkg"], "val":"pulse"}},
"2.x sock_sendpage() Local Ring0 Root Exploit":{"minver":"2", "maxver":"2.99", "exploitdb":"9435", "lang":"c", "keywords":{"loc":["kernel"], "val":"kernel"}},
"2.x sock_sendpage() Local Root Exploit 2":{"minver":"2", "maxver":"2.99", "exploitdb":"9436", "lang":"c", "keywords":{"loc":["kernel"], "val":"kernel"}},
"2.4/2.6 sock_sendpage() ring0 Root Exploit (simple ver)":{"minver":"2.4", "maxver":"2.6.99", "exploitdb":"9479", "lang":"c", "keywords":{"loc":["kernel"], "val":"kernel"}},
"2.6 < 2.6.19 (32bit) ip_append_data() ring0 Root Exploit":{"minver":"2.6", "maxver":"2.6.19", "exploitdb":"9542", "lang":"c", "keywords":{"loc":["kernel"], "val":"kernel"}},
"2.4/2.6 sock_sendpage() Local Root Exploit (ppc)":{"minver":"2.4", "maxver":"2.6.99", "exploitdb":"9545", "lang":"c", "keywords":{"loc":["kernel"], "val":"kernel"}},
"< 2.6.19 udp_sendmsg Local Root Exploit (x86/x64)":{"minver":"0", "maxver":"2.6.19", "exploitdb":"9574", "lang":"c", "keywords":{"loc":["kernel"], "val":"kernel"}},
"< 2.6.19 udp_sendmsg Local Root Exploit":{"minver":"0", "maxver":"2.6.19", "exploitdb":"9575", "lang":"c", "keywords":{"loc":["kernel"], "val":"kernel"}},
"2.4/2.6 sock_sendpage() Local Root Exploit [2]":{"minver":"2.4", "maxver":"2.6.99", "exploitdb":"9598", "lang":"c", "keywords":{"loc":["kernel"], "val":"kernel"}},
"2.4/2.6 sock_sendpage() Local Root Exploit [3]":{"minver":"2.4", "maxver":"2.6.99", "exploitdb":"9641", "lang":"c", "keywords":{"loc":["kernel"], "val":"kernel"}},
"2.4.1-2.4.37 and 2.6.1-2.6.32-rc5 Pipe.c Privelege Escalation":{"minver":"2.4.1", "maxver":"2.6.32", "exploitdb":"9844", "lang":"python", "keywords":{"loc":["kernel"], "val":"kernel"}},
"'pipe.c' Local Privilege Escalation Vulnerability":{"minver":"2.4.1", "maxver":"2.6.32", "exploitdb":"10018", "lang":"sh", "keywords":{"loc":["kernel"], "val":"kernel"}},
"2.6.18-20 2009 Local Root Exploit":{"minver":"2.6.18", "maxver":"2.6.20", "exploitdb":"10613", "lang":"c", "keywords":{"loc":["kernel"], "val":"kernel"}},
"Apache Spamassassin Milter Plugin Remote Root Command Execution":{"minver":"0", "maxver":"99", "exploitdb":"11662", "lang":"sh", "keywords":{"loc":["proc"], "val":"spamass-milter"}},
"<= 2.6.34-rc3 ReiserFS xattr Privilege Escalation":{"minver":"0", "maxver":"2.6.34", "exploitdb":"12130", "lang":"python", "keywords":{"loc":["mnt"], "val":"reiser"}},
"Ubuntu PAM MOTD local root":{"minver":"7", "maxver":"10.04", "exploitdb":"14339", "lang":"sh", "keywords":{"loc":["os"], "val":"ubuntu"}},
"< 2.6.36-rc1 CAN BCM Privilege Escalation Exploit":{"minver":"0", "maxver":"2.6.36", "exploitdb":"14814", "lang":"c", "keywords":{"loc":["kernel"], "val":"kernel"}},
"Kernel ia32syscall Emulation Privilege Escalation":{"minver":"0", "maxver":"99", "exploitdb":"15023", "lang":"c", "keywords":{"loc":["kernel"], "val":"kernel"}},
"Linux RDS Protocol Local Privilege Escalation":{"minver":"0", "maxver":"2.6.36", "exploitdb":"15285", "lang":"c", "keywords":{"loc":["kernel"], "val":"kernel"}},
"<= 2.6.37 Local Privilege Escalation":{"minver":"0", "maxver":"2.6.37", "exploitdb":"15704", "lang":"c", "keywords":{"loc":["kernel"], "val":"kernel"}},
"< 2.6.37-rc2 ACPI custom_method Privilege Escalation":{"minver":"0", "maxver":"2.6.37", "exploitdb":"15774", "lang":"c", "keywords":{"loc":["kernel"], "val":"kernel"}},
"CAP_SYS_ADMIN to root Exploit":{"minver":"0", "maxver":"99", "exploitdb":"15916", "lang":"c", "keywords":{"loc":["kernel"], "val":"kernel"}},
"CAP_SYS_ADMIN to Root Exploit 2 (32 and 64-bit)":{"minver":"0", "maxver":"99", "exploitdb":"15944", "lang":"c", "keywords":{"loc":["kernel"], "val":"kernel"}},
"< 2.6.36.2 Econet Privilege Escalation Exploit":{"minver":"0", "maxver":"2.6.36.2", "exploitdb":"17787", "lang":"c", "keywords":{"loc":["kernel"], "val":"kernel"}},
"Sendpage Local Privilege Escalation":{"minver":"0", "maxver":"99", "exploitdb":"19933", "lang":"ruby", "keywords":{"loc":["kernel"], "val":"kernel"}},
"2.4.18/19 Privileged File Descriptor Resource Exhaustion Vulnerability":{"minver":"2.4.18", "maxver":"2.4.19", "exploitdb":"21598", "lang":"c", "keywords":{"loc":["kernel"], "val":"kernel"}},
"2.2.x/2.4.x Privileged Process Hijacking Vulnerability (1)":{"minver":"2.2", "maxver":"2.4.99", "exploitdb":"22362", "lang":"c", "keywords":{"loc":["kernel"], "val":"kernel"}},
"2.2.x/2.4.x Privileged Process Hijacking Vulnerability (2)":{"minver":"2.2", "maxver":"2.4.99", "exploitdb":"22363", "lang":"c", "keywords":{"loc":["kernel"], "val":"kernel"}},
"Samba 2.2.8 Share Local Privilege Elevation Vulnerability":{"minver":"2.2.8", "maxver":"2.2.8", "exploitdb":"23674", "lang":"c", "keywords":{"loc":["proc","pkg"], "val":"samba"}},
"open-time Capability file_ns_capable() - Privilege Escalation Vulnerability":{"minver":"0", "maxver":"99", "exploitdb":"25307", "lang":"c", "keywords":{"loc":["kernel"], "val":"kernel"}},
"open-time Capability file_ns_capable() Privilege Escalation":{"minver":"0", "maxver":"99", "exploitdb":"25450", "lang":"c", "keywords":{"loc":["kernel"], "val":"kernel"}},
}
# variable declaration
os = sysInfo["OS"]["results"][0]
version = sysInfo["KERNEL"]["results"][0].split(" ")[2].split("-")[0]
langs = devTools["TOOLS"]["results"]
procs = getAppProc["PROCS"]["results"]
kernel = str(sysInfo["KERNEL"]["results"][0])
mount = driveInfo["MOUNT"]["results"]
#pkgs = getAppProc["PKGS"]["results"] # currently not using packages for sploit appicability but my in future
# lists to hold ranked, applicable sploits
# note: this is a best-effort, basic ranking designed to help in prioritizing priv escalation exploit checks
# all applicable exploits should be checked and this function could probably use some improvement
avgprob = []
highprob = []
for sploit in sploits:
lang = 0 # use to rank applicability of sploits
keyword = sploits[sploit]["keywords"]["val"]
sploitout = sploit + " || " + "http://www.exploit-db.com/exploits/" + sploits[sploit]["exploitdb"] + " || " + "Language=" + sploits[sploit]["lang"]
# first check for kernell applicability
if (version >= sploits[sploit]["minver"]) and (version <= sploits[sploit]["maxver"]):
# next check language applicability
if (sploits[sploit]["lang"] == "c") and (("gcc" in str(langs)) or ("cc" in str(langs))):
lang = 1 # language found, increase applicability score
elif sploits[sploit]["lang"] == "sh":
lang = 1 # language found, increase applicability score
elif (sploits[sploit]["lang"] in str(langs)):
lang = 1 # language found, increase applicability score
if lang == 0:
sploitout = sploitout + "**" # added mark if language not detected on system
# next check keyword matches to determine if some sploits have a higher probability of success
for loc in sploits[sploit]["keywords"]["loc"]:
if loc == "proc":
for proc in procs:
if keyword in proc:
highprob.append(sploitout) # if sploit is associated with a running process consider it a higher probability/applicability
break
break
elif loc == "os":
if (keyword in os) or (keyword in kernel):
highprob.append(sploitout) # if sploit is specifically applicable to this OS consider it a higher probability/applicability
break
elif loc == "mnt":
if keyword in mount:
highprob.append(sploitout) # if sploit is specifically applicable to a mounted file system consider it a higher probability/applicability
break
else:
avgprob.append(sploitout) # otherwise, consider average probability/applicability based only on kernel version
print " Note: Exploits relying on a compile/scripting language not detected on this system are marked with a '**' but should still be tested!"
print
print " The following exploits are ranked higher in probability of success because this script detected a related running process, OS, or mounted file system"
for exploit in highprob:
print " - " + exploit
print
print " The following exploits are applicable to this kernel version and should be investigated as well"
for exploit in avgprob:
print " - " + exploit
print
print "Finished"
print bigline
@n95950
Copy link

n95950 commented Feb 16, 2018

Thanks, this is very helpful.

Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment