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NSA and CISA Red and Blue Teams Share Top Ten Cybersecurity Misconfigurations

Oct 5, 2023 / in Uncategorized

A plea for network defenders and software manufacturers to fix common problems. EXECUTIVE SUMMARY The National Security Agency (NSA) and Cybersecurity and Infrastructure Security Agency (CISA) are releasing this joint cybersecurity advisory (CSA) to highlight the most common cybersecurity misconfigurations in large organizations, and detail the tactics, techniques, and procedures (TTPs) actors use to exploit…

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People's Republic of China-Linked Cyber Actors Hide in Router Firmware

Sep 26, 2023 / in Uncategorized

Executive Summary The United States National Security Agency (NSA), the U.S. Federal Bureau of Investigation (FBI), the U.S. Cybersecurity and Infrastructure Security Agency (CISA), the Japan National Police Agency (NPA), and the Japan National Center of Incident Readiness and Strategy for Cybersecurity (NISC) (hereafter referred to as the “authoring agencies”) are releasing this joint cybersecurity…

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#StopRansomware: Snatch Ransomware

Sep 18, 2023 / in Uncategorized

SUMMARY Note: This joint Cybersecurity Advisory (CSA) is part of an ongoing #StopRansomware effort to publish advisories for network defenders that detail various ransomware variants and ransomware threat actors. These #StopRansomware advisories include recently and historically observed tactics, techniques, and procedures (TTPs) and indicators of compromise (IOCs) to help organizations protect against ransomware. Visit stopransomware.gov…

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Multiple Nation-State Threat Actors Exploit CVE-2022-47966 and CVE-2022-42475

Sep 6, 2023 / in Uncategorized

SUMMARY The Cybersecurity and Infrastructure Security Agency (CISA), Federal Bureau of Investigation (FBI), and Cyber National Mission Force (CNMF) identified the presence of indicators of compromise (IOCs) at an Aeronautical Sector organization as early as January 2023. Analysts confirmed that nation-state advanced persistent threat (APT) actors exploited CVE-2022-47966 to gain unauthorized access to a public-facing…

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Identification and Disruption of QakBot Infrastructure

Aug 29, 2023 / in Uncategorized

SUMMARY The Cybersecurity and Infrastructure Security Agency (CISA) and Federal Bureau of Investigation (FBI) are releasing this joint Cybersecurity Advisory (CSA) to disseminate QakBot infrastructure indicators of compromise (IOCs) identified through FBI investigations as of August 2023. On August 25, FBI and international partners executed a coordinated operation to disrupt QakBot infrastructure worldwide. Disruption operations…

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2022 Top Routinely Exploited Vulnerabilities

Aug 2, 2023 / in Uncategorized

SUMMARY The following cybersecurity agencies coauthored this joint Cybersecurity Advisory (CSA): United States: The Cybersecurity and Infrastructure Security Agency (CISA), National Security Agency (NSA), and Federal Bureau of Investigation (FBI) Australia: Australian Signals Directorate’s Australian Cyber Security Centre (ACSC) Canada: Canadian Centre for Cyber Security (CCCS) New Zealand: New Zealand National Cyber Security Centre (NCSC-NZ)…

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Threat Actors Exploiting Ivanti EPMM Vulnerabilities

Aug 1, 2023 / in Uncategorized

SUMMARY The Cybersecurity and Infrastructure Security Agency (CISA) and the Norwegian National Cyber Security Centre (NCSC-NO) are releasing this joint Cybersecurity Advisory (CSA) in response to active exploitation of CVE-2023-35078 and CVE-2023-35081. Advanced persistent threat (APT) actors exploited CVE-2023-35078 as a zero day from at least April 2023 through July 2023 to gather information from…

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Preventing Web Application Access Control Abuse

Jul 26, 2023 / in Uncategorized

SUMMARY The Australian Signals Directorate’s Australian Cyber Security Centre (ACSC), U.S. Cybersecurity and Infrastructure Security Agency (CISA), and U.S. National Security Agency (NSA) are releasing this joint Cybersecurity Advisory to warn vendors, designers, and developers of web applications and organizations using web applications about insecure direct object reference (IDOR) vulnerabilities. IDOR vulnerabilities are access control…

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Threat Actors Exploiting Citrix CVE-2023-3519 to Implant Webshells

Jul 20, 2023 / in Uncategorized

SUMMARY The Cybersecurity and Infrastructure Security Agency (CISA) is releasing this Cybersecurity Advisory to warn network defenders about exploitation of CVE-2023-3519, an unauthenticated remote code execution (RCE) vulnerability affecting NetScaler (formerly Citrix) Application Delivery Controller (ADC) and NetScaler Gateway. In June 2023, threat actors exploited this vulnerability as a zero-day to drop a webshell on…

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Enhanced Monitoring to Detect APT Activity Targeting Outlook Online

Jul 11, 2023 / in Uncategorized

SUMMARY In June 2023, a Federal Civilian Executive Branch (FCEB) agency identified suspicious activity in their Microsoft 365 (M365) cloud environment. The agency reported the activity to Microsoft and the Cybersecurity and Infrastructure Security Agency (CISA), and Microsoft determined that advanced persistent threat (APT) actors accessed and exfiltrated unclassified Exchange Online Outlook data. CISA and…

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