Microsoft Releases Guidance for Mitigating PetitPotam NTLM Relay Attacks

On July 23, Microsoft released KB5005413: Mitigating NTLM Relay Attacks on Active Directory Certificate Services AD CS to address a NTLM Relay Attack named PetitPotam. CISA encourages users and administrators to review KB5005413 and apply the necessary mitigations. This product is provided subjec...

Microsoft Rushes Fix for ‘PetitPotam’ Attack PoC

Microsoft was quick to respond with a fix to an attack dubbed “PetitPotam” that could force remote Windows systems to reveal password hashes that could then be easily cracked. To thwart an attack, Microsoft recommends system administrators stop using the now deprecated Windows NT LAN Manager NTLM...

New PetitPotam NTLM Relay Attack Lets Hackers Take Over Windows Domains

A newly uncovered security flaw in the Windows operating system can be exploited to coerce remote Windows servers, including Domain Controllers, to authenticate with a malicious destination, thereby allowing an adversary to stage an NTLM relay attack and completely take over a Windows domain. The...

Mitigating NTLM Relay Attacks on Active Directory Certificate Services (AD CS)

Summary Microsoft is aware of PetitPotam which can potentially be used in an attack on Windows domain controllers or other Windows servers. PetitPotam is a classic NTLM Relay Attack, and such attacks have been previously documented by Microsoft along with numerous mitigation options to protect...

KLA12244 Microsoft Advisory for Active Directory Certificate Services

Microsoft is aware of PetitPotam which can potentially be used in an attack on Windows domain controllers or other Windows servers.To prevent NTLM Relay Attacks on networks with NTLM enabled, domain administrators must ensure that services that permit NTLM authentication make use of protections...

KLA12248 Microsoft Advisory (ESU) for Active Directory Certificate Services

Microsoft is aware of PetitPotam which can potentially be used in an attack on Windows domain controllers or other Microsoft Products Extended Security Update.To prevent NTLM Relay Attacks on networks with NTLM enabled, domain administrators must ensure that services that permit NTLM authenticati...

smbAutoRelay - Provides The Automation Of SMB/NTLM Relay Technique For Pentesting And Red Teaming Exercises In Active Directory Environments

SMB AutoRelay provides the automation of SMB/NTLM Relay technique for pentesting and red teaming exercises in active directory environments. Usage Syntax: ./smbAutoRelay.sh -i -t -q -d . Example: ./smbAutoRelay.sh -i eth0 -t ./targets.txt . Notice that the targets file should contain just the IP...

F5 Networks BIG-IP : BIG-IP APM Edge Client vulnerability (K97733133)

When a user connects to a VPN using BIG-IP Edge Client over an unsecure network, BIG-IP Edge Client responds to authentication requests over HTTP while sending probes for captive portal detection. CVE-2020-5893 Impact An attacker can use a man-in-the-middle MITM attack by deploying a...

Microsoft Windows Task Scheduler Security Feature Bypass Vulnerability

Compass Security identified a security feature bypass vulnerability in Microsoft Windows. Due to the absence of integrity verification requirements for the RPC protocol and in particular the Task Scheduler, a man-in-the-middle attacker can relay his victim's NTLM authentication to a target of his...

Microsoft Windows Task Scheduler Security Feature Bypass

COMPASS SECURITY ADVISORY https://www.compass-security.com/research/advisories/ Product: Windows Task Scheduler Vendor: Microsoft CSNC ID: CSNC-2010-001 CVE ID: CVE-2020-1113 Subject: Security Feature Bypass Risk: High Effect: Remotely exploitable Authors: Sylvain Heiniger Date: 14.05.2020...

Microsoft Exchange – NTLM Relay

Gaining access to the mailbox of a user during a penetration test or a red team engagement can lead to arbitrary code execution, discovery of sensitive data such as credentials or performing internal Phishing to expand access across the network. Typically access to the mailbox is achieved via...

Binding CVE-2019-1040 vulnerability of the two domains provide the right depth of analysis-vulnerability warning-the black bar safety net

2019, 6 month, Microsoft released a security update. The update for CVE-2019-1040 vulnerability to repair. This vulnerability, an attacker could man in the middle attacks, bypassing the NTLM MIC（message integrity check protection, the authentication traffic is relayed to the target server. Throug...

Microsoft Confirms Serious 'PrivExchange' Vulnerability

Microsoft acknowledged an elevated privilege flaw in its Exchange Server could allow a remote attacker with a simple mailbox account to gain administrator privileges. Both a Microsoft advisory and a US-CERT alert were issued on Tuesday warning users of the elevation of privilege flaw, dubbed...

CERT/CC Reports Microsoft Exchange 2013 and Newer are Vulnerable to NTLM Relay Attacks

The CERT Coordination Center CERT/CC has released information to address NTLM relay attacks affecting Microsoft Exchange 2013 and newer versions. A remote attacker could exploit this vulnerability to take control of an affected system. The National Cybersecurity and Communications Integration...

Microsoft Exchange server 2013 and newer are vulnerable to NTLM relay attacks

Overview Microsoft Exchange 2013 and newer fail to set signing and sealing flags on NTLM authentication traffic, which can allow a remote attacker to gain the privileges of the Exchange server. Description Microsoft Exchange supports a API called Exchange Web Services EWS. One of the EWS API...

Ship new releases of Exchange Server to mention the right vulnerability analysis-vulnerability warning-the black bar safety net

In the majority of the use of Active Directory and Exchange Organization, Exchange servers typically have very high permissions on the Exchange Server administrators can upgrade to a domain administrator. I recently read a report from ZDI articlesCVE-2018-8581 technical details of its use, which...

ExchangeRelayX - An NTLM Relay Tool To The EWS Endpoint For On-Premise Exchange Servers (Provides An OWA For Hackers)

Version 1.0.0. This tool is a PoC to demonstrate the ability of an attacker to perform an SMB or HTTP based NTLM relay attack to the EWS endpoint on an on-premise Microsoft Exchange server to compromise the mailbox of the victim. This tool provides the attacker with an OWA looking interface, with...

OWA for hackers: ExchangeRelayX

ExchangeRelayX is a PoC tools to demonstrate the ability of an attacker to perform an SMB or HTTP based NTLM relay attack to the EWS endpoint on an on-premise Microsoft Exchange server to compromise the mailbox of the victim. This tool provides the attacker with an OWA looking interface, with...

ICSA-18-093-01 Siemens Building Technologies Products (Update A)

1. EXECUTIVE SUMMARY CVSS v3 9.8 ATTENTION : Exploitable remotely/low skill level to exploit. Vendor : Siemens Equipment : Building Technologies Products Vulnerabilities : Stack-based Buffer Overflows, Security Features, Improper Restriction of Operations within the Bounds of a Memory Buffer, NUL...

CVE-2017-12819

Remote manipulations with language pack updater lead to NTLM-relay attack for system user in Gemalto's HASP SRM, Sentinel HASP and Sentinel LDK products prior to Sentinel LDK RTE version 7.55...