Joint Advisory AA22-279A and Vulristics

Hello everyone! This episode will be about the new hot twenty vulnerabilities from CISA, NSA and FBI, Joint cybersecurity advisory CSA AA22-279A, and how I analyzed these vulnerabilities using my open source project Vulristics. Alternative video link for Russia: Americans cant just release a list...

Black Kingdom ransomware

Black Kingdom ransomware appeared on the scene back in 2019, but we observed some activity again in 2021. The ransomware was used by an unknown adversary for exploiting a Microsoft Exchange vulnerability CVE-2021-27065. The complexity and sophistication of the Black Kingdom family cannot bear a...

Lemon Duck Cryptojacking Botnet Changes Up Tactics

The Lemon Duck cryptocurrency-mining botnet has added the ProxyLogon group of exploits to its bag of tricks, targeting Microsoft Exchange servers. That’s according to researchers at Cisco Talos, who said that the cybercrime group behind Lemon Duck has also added the Cobalt Strike attack framework...

Microsoft Exchange ProxyLogon RCE

This module exploit a vulnerability on Microsoft Exchange Server that allows an attacker bypassing the authentication, impersonating as the admin CVE-2021-26855 and write arbitrary file CVE-2021-27065 to get the RCE Remote Code Execution. By taking advantage of this vulnerability, you can execute...

Microsoft Exchange ProxyLogon Scanner

This module scan for a vulnerability on Microsoft Exchange Server that allows an attacker bypassing the authentication and impersonating as the admin CVE-2021-26855. By chaining this bug with another post-auth arbitrary-file-write vulnerability to get code execution CVE-2021-27065. As a result, a...

Microsoft Exchange ProxyLogon Remote Code Execution Exploit

This Metasploit module exploits a vulnerability on Microsoft Exchange Server that allows an attacker bypassing the authentication, impersonating as the admin CVE-2021-26855 and write arbitrary file CVE-2021-27065 to get the RCE Remote Code Execution. By taking advantage of this vulnerability, you...

Microsoft Exchange ProxyLogon Remote Code Execution

This module requires Metasploit: https://metasploit.com/download Current source: https://github.com/rapid7/metasploit-framework class MetasploitModule 'Microsoft Exchange ProxyLogon RCE', 'Description' = %q This module exploit a vulnerability on Microsoft Exchange Server that allows an attacker...

Guidance for responders: Investigating and remediating on-premises Exchange Server vulnerabilities

This guidance will help customers address threats taking advantage of the recently disclosed Microsoft Exchange Server on-premises vulnerabilities CVE-2021-26855, CVE-2021-26858, CVE-2021-26857, and CVE-2021-27065. Microsoft will continue to monitor these threats and provide updated tools and...

Guidance for responders: Investigating and remediating on-premises Exchange Server vulnerabilities

This guidance will help customers address threats taking advantage of the recently disclosed Microsoft Exchange Server on-premises vulnerabilities CVE-2021-26855, CVE-2021-26858, CVE-2021-26857, and CVE-2021-27065, which are being exploited. We strongly urge customers to immediately update system...

Guidance for responders: Investigating and remediating on-premises Exchange Server vulnerabilities

This guidance will help customers address threats taking advantage of the recently disclosed Microsoft Exchange Server on-premises vulnerabilities CVE-2021-26855, CVE-2021-26858, CVE-2021-26857, and CVE-2021-27065, which are being exploited. We strongly urge customers to immediately update system...

How Akamai Can Help You Fight the Latest Exploitation Attempts Against Microsoft Exchange

Co-authored by Ryan Barnett. AppSec Protections for Microsoft Exchange CVE-2021-26855, CVE-2021-26857, CVE-2021-26858, CVE-2021-27065 On March 2, 2021, the Microsoft Security Response Center alerted its customers to several critical security updates to Microsoft Exchange Server, addressing...

Microsoft Exchange 2019 - SSRF to Arbitrary File Write (Proxylogon) Exploit

Exploit Title: Microsoft Exchange 2019 - SSRF to Arbitrary File Write Proxylogon Date: 2021-03-10 Exploit Author: testanull Vendor Homepage: https://www.microsoft.com Version: MS Exchange Server 2013, 2016, 2019 CVE: 2021-26855, 2021-27065 import requests from urllib3.exceptions import...

Threat Advisory: HAFNIUM and Microsoft Exchange zero-day

Microsoft released patches for four vulnerabilities in Exchange Server on March 2, disclosing that these vulnerabilities were being exploited by a previously unknown threat actor, referred to as HAFNIUM. The vulnerabilities in question — CVE-2021-26855, CVE-2021-26857, CVE-2021-26858 and...

Detection and Response to Exploitation of Microsoft Exchange Zero-Day Vulnerabilities

Beginning in January 2021, Mandiant Managed Defense observed multiple instances of abuse of Microsoft Exchange Server within at least one client environment. The observed activity included creation of web shells for persistent access, remote code execution, and reconnaissance for endpoint securit...

Microsoft Exchange Server Zero-Days (ProxyLogon) – Automatically Discover, Prioritize and Remediate Using Qualys VMDR

Update March 10, 2021: A new section describes how to respond with mitigation controls if patches cannot be applied, as recommended by Microsoft. This section details the Qualys Policy Compliance control ids for each vulnerability. Update March 8, 2021: Qualys has released an additional QID: 5010...

Microsoft Exchange 0-Day Attackers Spy on U.S. Targets

Microsoft has spotted multiple zero-day exploits in the wild being used to attack on-premises versions of Microsoft Exchange Server. Adversaries have been able to access email accounts, steal a raft of data and drop malware on target machines for long-term remote access, according to the computin...

CVE-2021-27065

creationtimestamp| type| source ---|---|--- 2021-03-03 02:44:45+00:00| seen| https://t.me/cibsecurity/24377 2021-03-03 04:00:00+00:00| seen| https://www.govcert.gov.hk/en/alertsdetail.php?id=556 2021-03-03 06:31:27+00:00| seen| MISP/76591c3b-efb3-4084-a644-87a6cca8c784 2021-03-03 15:38:55+00:00|...

CVE-2021-27065

Microsoft Exchange Server Remote Code Execution Vulnerability...

CVE-2021-27065

Microsoft Exchange Server Remote Code Execution Vulnerability...

CVE-2021-27065

Microsoft Exchange Server Remote Code Execution Vulnerability Recent assessments: wvu-r7 at March 10, 2021 7:13am UTC reported: When used with CVE-2021-26855, an unauthenticated SSRF, CVE-2021-27065 yields unauthed, SYSTEM-level RCE against a vulnerable Exchange Server. On its own, exploiting thi...