SwitHak

Security Advisories / Bulletins / vendors Responses linked to Log4Shell (CVE-2021-44228)

Errors, typos, something to say ?

• If you want to add a link, comment or send it to me
• Feel free to report any mistake directly below in the comment or in DM on Twitter @SwitHak

Other great resources

• Royce Williams list sorted by vendors responses Royce List
• Very detailed list NCSC-NL
• The list maintained by U.S. Cybersecurity and Infrastructure Security Agency: CISA List

testanull

import requests
import random
import string
import sys
import time
import requests
import urllib3
urllib3.disable_warnings(urllib3.exceptions.InsecureRequestWarning)

def id_generator(size=6, chars=string.ascii_lowercase + string.digits):

MHaggis

#AntiVirus Query
#Author: @r3dQu1nn
#Queries the Registry for AV installed
#Thanks to @i_am_excite and @merrillmatt011 for the help
#Props to @zerosum0x0 for the wmic find!

#Long ass one-liner :)
$powershellcmd = "\$av_list = @(\"BitDefender\", \"Kaspersky\", \"McAfee\", \"Norton\", \"Avast\", \"WebRoot\", \"AVG\", \"ESET\", \"Malware\", \"Windows Defender\");\$av_install = Get-ItemProperty HKLM:\\SOFTWARE\\Wow6432Node\\Microsoft\\Windows\\CurrentVersion\\Uninstall\\*;\$av_install1 = Get-ItemProperty HKLM:\\SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Uninstall\\*;\$regkey = 'HKLM:\\SOFTWARE\\Microsoft\\Windows Defender\\Signature Updates\\';\$av_loop2 = foreach (\$av1 in \$av_list){foreach (\$key in \$av_install){if (\$key.DisplayName -match \$av1 -eq \$TRUE){% {\"{0}|{1}|{2}\" -f \$key.DisplayName.ToString(), \$key.DisplayVersion.ToString(), \$key.InstallDate.ToString()}}}};\$proc_temp = Get-Process;\$av_loop = foreach (\$av in \$av_list){foreach (\$zz in \$proc_temp){if (\$zz.path -match \$av -eq \$TRUE)

terjanq

A TL;DR solution to Security Driven by @terjanq

For this year's Google CTF, I prepared a challenge that is based on a real-world vulnerability. The challenge wasn't solved by any team during the competition so here is the proof that the challenge was in fact solvable! :)

• Link to the challenge: https://capturetheflag.withgoogle.com/challenges/web-security-driven
• Link to the PoC: https://github.com/google/google-ctf/tree/master/2021/quals/web-security-driven/solution

The goal of the challenge was to send a malicious file to the admin and leak their file with a flag. The ID of the file was embedded into the challenge description (/file?id=133711377731) and only admin had access to it, because the file was private.

Disclamer: The write-up is written on airplane therefore the quality of it is poor, mostly to showcase the required steps to solve the challenge

TheWover

using System;
using System.Diagnostics;
using System.Runtime.InteropServices;

namespace EtwpTest
{
    class Program
    {
        static void Main(string[] args)
        {