New NTLM Relay Attack Lets Attackers Take Control Over Windows Domain

A new kind of Windows NTLM relay attack dubbed DFSCoerce has been uncovered that leverages the Distributed File System DFS: Namespace Management Protocol MS-DFSNM to seize control of a domain. "Spooler service disabled, RPC filters installed to prevent PetitPotam and File Server VSS Agent Service...

Microsoft Releases Fix for New Zero-Day with May 2022 Patch Tuesday Updates

Microsoft on Tuesday rolled out fixes for as many as 74 security vulnerabilities, including one for a zero-day bug that's being actively exploited in the wild. Of the 74 issues, seven are rated Critical, 66 are rated Important, and one is rated low in severity. Two of the flaws are listed as...

PT-2022-2475 · Microsoft · Active Directory Certificate Services +2

Name of the Vulnerable Software and Affected Versions: Windows LSA versions prior to the fixed version Description: The issue is related to a spoofing vulnerability in the Windows LSA component, allowing attackers to bypass authentication mechanisms. This can enable a remote attacker to perform a...

CVE-2022-24853

Metabase is an open source business intelligence and analytics application. Metabase has a proxy to load arbitrary URLs for JSON maps as part of our GeoJSON support. While we do validation to not return contents of arbitrary URLs, there is a case where a particularly crafted request could result ...

Input validation

Metabase is an open source business intelligence and analytics application. Metabase has a proxy to load arbitrary URLs for JSON maps as part of our GeoJSON support. While we do validation to not return contents of arbitrary URLs, there is a case where a particularly crafted request could result ...

CVE-2022-24853 File system exposure in Metabase

Metabase is an open source business intelligence and analytics application. Metabase has a proxy to load arbitrary URLs for JSON maps as part of our GeoJSON support. While we do validation to not return contents of arbitrary URLs, there is a case where a particularly crafted request could result ...

CVE-2022-24853

CVE-2022-24853 affects Metabase (GeoJSON support via a URL-loading proxy). The issue arises from a proxy that loads arbitrary URLs for JSON maps; while validation prevents returning arbitrary URL contents, a crafted request can trigger file access on Windows, enabling an NTLM relay attack and pot...

CVE-2022-24853 File system exposure in Metabase

Metabase is an open source business intelligence and analytics application. Metabase has a proxy to load arbitrary URLs for JSON maps as part of our GeoJSON support. While we do validation to not return contents of arbitrary URLs, there is a case where a particularly crafted request could result ...

CVE-2022-24853 File system exposure in Metabase

Metabase is an open source business intelligence and analytics application. Metabase has a proxy to load arbitrary URLs for JSON maps as part of our GeoJSON support. While we do validation to not return contents of arbitrary URLs, there is a case where a particularly crafted request could result ...

Github clash 访问控制错误漏洞

Github clash is a rule-based tunnel in Go. A security vulnerability exists in Github clash, which can be exploited by embedding a malicious iframe page into a website with a crafted URL that launches the Clash Windows client and forces it to open a remote SMB share. Windows will perform NTLM...

PT-2022-09: Insufficient validation of file paths and Path Traversal in Veeam Backup & Replication

The vulnerability was identified in Veeam Backup & Replication versions 9.5, 10, 11. The discovered vulnerability allows an attaker to perform an NTLM-relay attack on behalf of the account under which the service is running, uploading arbitrary files from arbitrary paths to the VBR server,...

Dropping Files on a Domain Controller Using CVE-2021-43893

On December 14, 2021, during the Log4Shell chaos, Microsoft published CVE-2021-43893, a remote privilege escalation vulnerability affecting the Windows Encrypted File System EFS. The vulnerability was credited to James Forshaw of Google Project Zero, but perhaps owing to the Log4Shell atmosphere,...

Metasploit Wrap-Up

Welcome, Little Hippo: PetitPotam Our very own @zeroSteiner ported the PetitPotam exploit to Metasploit this week. This module leverages CVE-2021-36942, a vulnerability in the Windows Encrypting File System EFS API, to capture machine NTLM hashes. This uses the EfsRpcOpenFileRaw function of the...

PetitPotam – NTLM Relay to AD CS

Deployment of an Active Directory Certificate Services AD CS on a corporate environment could allow system administrators to utilize it for establishing trust between different… Continue reading - PetitPotam - NTLM Relay to AD CS...

LockFile Ransomware Uses Never-Before Seen Encryption to Avoid Detection

Researchers discovered a novel ransomware emerging on the heels of the ProxyShell vulnerabilities discovery in Microsoft Exchange servers. The threat, dubbed LockFile, uses a unique “intermittent encryption” method as a way to evade detection as well as adopting tactics from previous ransomware...

Patch now! Microsoft Exchange is being attacked via ProxyShell

Last Saturday the Cybersecurity and Infrastructure Security Agency issued an urgent warning that threat actors are actively exploiting three Microsoft Exchange vulnerabilities—CVE-2021-34473, CVE-2021-34523, and CVE-2021-31207. These vulnerabilities can be chained together to remotely execute...

Microsoft Releases Windows Updates to Patch Actively Exploited Vulnerability

Microsoft on Tuesday rolled out security updates to address a total of 44 security issues affecting its software products and services, one of which it says is an actively exploited zero-day in the wild. The update, which is the smallest release since December 2019, squashes seven Critical and 37...

PetitPotam: Novel Attack Chain Can Fully Compromise Windows Domains Running AD CS

The PetitPotam attack vector was assigned CVE-2021-36942 and patched on August 10, 2021. See the Updates section at the end of this post for more information. Late last month July 2021, security researcher Topotam published a proof-of-concept PoC implementation of a novel NTLM relay attack...

Microsoft Windows Active Directory Certificate Services can allow for AD compromise via PetitPotam NTLM relay attacks

Overview Microsoft Windows Active Directory Certificate Services AD CS by default can be used as a target for NTLM relay attacks, which can allow a domain-joined computer to take over the entire Active Directory. Description PetitPotam is a tool to force Windows hosts to authenticate to other...

Microsoft provides more mitigation instructions for the PetitPotam attack

In a revision of KnowledgeBase article KB5005413, Microsoft has provided more elaborate mitigation instructions for the PetitPotam attacks that were disclosed a week ago. PetitPotam is the name for an attack method using a bug that was found by a security researcher who also published a...