Malicious Exchange Server Module Hoovers Up Outlook Credentials

Researchers have uncovered a previously unknown malicious IIS module, dubbed Owowa, that steals credentials when users log into Microsoft Outlook Web Access OWA. Internet Information Services IIS, Microsoft’s web server/web-hosting software suite, can be extended via various add-ons that are know...

UNC215: Spotlight on a Chinese Espionage Campaign in Israel

This blog post details the post-compromise tradecraft and operational tactics, techniques, and procedures TTPs of a Chinese espionage group we track as UNC215. While UNC215’s targets are located throughout the Middle East, Europe, Asia, and North America, this report focuses on intrusion activity...

Microsoft Exchange 2019 - Unauthenticated Email Download

Exploit Title: Microsoft Exchange 2019 - Unauthenticated Email Download Date: 03-11-2021 Exploit Author: Gonzalo Villegas a.k.a Cl34r Vendor Homepage: https://www.microsoft.com/ Version: OWA Exchange 2013 - 2019 Tested on: OWA 2016 CVE : CVE-2021-26855 Details: checking users mailboxes and...

Microsoft Exchange 2019 - Unauthenticated Email Download Exploit

Exploit Title: Microsoft Exchange 2019 - Unauthenticated Email Download Exploit Author: Gonzalo Villegas a.k.a Cl34r Vendor Homepage: https://www.microsoft.com/ Version: OWA Exchange 2013 - 2019 Tested on: OWA 2016 CVE : CVE-2021-26855 Details: checking users mailboxes and automated downloads of...

CVE-2021-1730

A spoofing vulnerability exists in Microsoft Exchange Server which could result in an attack that would allow a malicious actor to impersonate the user. This update addresses this vulnerability. To prevent these types of attacks, Microsoft recommends customers to download inline images from...

Spoofing

A spoofing vulnerability exists in Microsoft Exchange Server which could result in an attack that would allow a malicious actor to impersonate the user. This update addresses this vulnerability. To prevent these types of attacks, Microsoft recommends customers to download inline images from...

Microsoft Exchange Server Spoofing Vulnerability

A spoofing vulnerability exists in Microsoft Exchange Server which could result in an attack that would allow a malicious actor to impersonate the user. This update addresses this vulnerability. To prevent these types of attacks, Microsoft recommends customers to download inline images from...

How the SolarWinds Hackers Bypassed Duo’s Multi-Factor Authentication

This is interesting: Toward the end of the second incident that Volexity worked involving Dark Halo, the actor was observed accessing the e-mail account of a user via OWA. This was unexpected for a few reasons, not least of which was the targeted mailbox was protected by MFA. Logs from the Exchan...

CVE-2020-17144

Microsoft Exchange Remote Code Execution Vulnerability Recent assessments: cnotin at December 10, 2020 12:16am UTC reported: Require access to OWA EWS, authenticated with password or NTLM hash Deserialization bug Only concerns Exchange 2010 because the vulnerable feature is missing from later...

CVE-2020-16969

An information disclosure vulnerability exists in how Microsoft Exchange validates tokens when handling certain messages. An attacker who successfully exploited the vulnerability could use this to gain further information from a user. To exploit the vulnerability, an attacker could include...

Microsoft Exchange Information Disclosure Vulnerability

An information disclosure vulnerability exists in how Microsoft Exchange validates tokens when handling certain messages. An attacker who successfully exploited the vulnerability could use this to gain further information from a user. To exploit the vulnerability, an attacker could include...

SharpHose - Asynchronous Password Spraying Tool In C# For Windows Environments

SharpHose is a C password spraying tool designed to be fast, safe, and usable over Cobalt Strike's execute-assembly. It provides a flexible way to interact with Active Directory using domain-joined and non-joined contexts, while also being able to target specific domains and domain controllers...

Spray - A Password Spraying Tool For Active Directory Credentials By Jacob Wilkin(Greenwolf)

A Password Spraying tool for Active Directory Credentials by Jacob WilkinGreenwolf Getting Started These instructions will show you the requirements for and how to use Spray. Prerequisites All requirements come preinstalled on Kali Linux, to run on other flavors or Mac just make sure curlowa & ly...

Ghost in the shell: Investigating web shell attacks

Recently, an organization in the public sector discovered that one of their internet-facing servers was misconfigured and allowed attackers to upload a web shell, which let the adversaries gain a foothold for further compromise. The organization enlisted the services of Microsoft’s Detection and...

XSS vulnerability in FortiAuthenticator OWA Agent

FortiAuthenticator Agent for Outlook Web Access v1.5 and below...

CVE-2019-1266

A spoofing vulnerability exists in Microsoft Exchange Server when Outlook Web App OWA fails to properly handle web requests, aka 'Microsoft Exchange Spoofing Vulnerability'...

Microsoft Exchange Spoofing Vulnerability

A spoofing vulnerability exists in Microsoft Exchange Server when Outlook Web App OWA fails to properly handle web requests. An attacker who successfully exploited the vulnerability could perform script or content injection attacks, and attempt to trick the user into disclosing sensitive...

Microsoft Exchange – Password Spraying

Outlook Web Access OWA portals typically are externally facing in order to allow users to get access to their emails from the Internet. This gives the opportunity to threat actors to use a common password against a valid list of usernames Password Spraying in order to get some initial access to t...

Spoofing

A spoofing vulnerability exists in Microsoft Exchange Server when Outlook Web Access OWA fails to properly handle web requests, aka 'Microsoft Exchange Spoofing Vulnerability'. This CVE ID is unique from CVE-2019-0817...

CVE-2019-0858

CVE-2019-0858 is a Microsoft Exchange Server spoofing vulnerability where Outlook Web Access (OWA) mis-handles certain web requests, enabling script or content injection and phishing-like redirection as described in multiple sources. Affected software is Microsoft Exchange Server with OWA as the ...