CISA-FBI Guidance for MSPs and their Customers Affected by the Kaseya VSA Supply-Chain Ransomware Attack

CISA and the Federal Bureau of Investigation FBI continue to respond to the recent supply-chain ransomware attack leveraging a vulnerability in Kaseya VSA software against multiple managed service providers MSPs and their customers. CISA and FBI strongly urge affected MSPs and their customers to...

Kaseya VSA Supply-Chain Ransomware Attack

CISA is taking action to understand and address the recent supply-chain ransomware attack against Kaseya VSA and the multiple managed service providers MSPs that employ VSA software. CISA encourages organizations to review the Kaseya advisory and immediately follow their guidance to shutdown VSA...

NSA-CISA-NCSC-FBI Joint Cybersecurity Advisory on Russian GRU Brute Force Campaign

The National Security Agency NSA, Cybersecurity and Infrastructure Security Agency CISA, Federal Bureau of Investigation FBI, and the UK’s National Cyber Security Centre NCSC have released Joint Cybersecurity Advisory CSA: Russian GRU Conducting Global Brute Force Campaign to Compromise Enterpris...

CISA’s CSET Tool Sets Sights on Ransomware Threat

CISA has released a new module in its Cyber Security Evaluation Tool CSET: the Ransomware Readiness Assessment RRA. CSET is a desktop software tool that guides network defenders through a step-by-step process to evaluate their cybersecurity practices on their networks. CSET—applicable to both...

PrintNightmare, Critical Windows Print Spooler Vulnerability

Updated July 2, 2021 For new information and mitigations, see Microsoft's updated guidance for the Print spooler vulnerability CVE-2021-34527. Updated July 1, 2021 See Microsoft's new guidance for the Print spooler vulnerability CVE-2021-34527 and apply the necessary workarounds. Original post Ju...

CISA Begins Cataloging Bad Practices that Increase Cyber Risk

In a blog post by Executive Assistant Director EAD Eric Goldstein, CISA announced the creation of a catalog to document bad cybersecurity practices that are exceptionally risky for any organization and especially dangerous for those supporting designated Critical Infrastructure or National Critic...

Citrix Releases Security Updates for Hypervisor

Citrix has released security updates to address vulnerabilities in Hypervisor. An attacker could exploit these vulnerabilities to cause a denial-of-service condition. CISA encourages users and administrators to review Citrix Security Update CTX316325 and apply the necessary updates. This product ...

VMware Releases Security Updates

VMware has released security updates to address vulnerabilities in the VMware Carbon Black App Control management server as well as VMware Tools for Windows, VMware Remote Console for Windows, and VMware App Volumes. An attacker could exploit these vulnerabilities to take control of an affected...

Google Releases Security Updates for Chrome

Google has released Chrome version 91.0.4472.114 for Windows, Mac, and Linux. This version addresses vulnerabilities that an attacker could exploit to take control of an affected system. One of these vulnerabilities—CVE-2021-30554—has been detected in exploits in the wild. CISA encourages users a...

Cisco Releases Security Updates for Multiple Products

Cisco has released security updates to address vulnerabilities in multiple Cisco products. An attacker could exploit some of these vulnerabilities to take control of an affected system. For updates addressing lower severity vulnerabilities, see the Cisco Security Advisories page. CISA encourages...

Apple Releases Security Updates for iOS 12.5.4

Apple has released security updates to address vulnerabilities in iOS 12.5.4. An attacker could exploit these vulnerabilities to take control of an affected system. CISA encourages users and administrators to review the Apple security update and apply the necessary updates. This product is provid...

CISA Releases Advisory on ZOLL Defibrillator Dashboard

CISA has released an Industrial Controls Systems ICS Medical Advisory on multiple vulnerabilities in the ZOLL Defibrillator Dashboard. A remote attacker could exploit some of these vulnerabilities to take control of an affected system. CISA encourages users and administrators to review the ICS...

Google Releases Security Updates for Chrome

Google has released Chrome version 91.0.4472.101 for Windows, Mac, and Linux. This version addresses vulnerabilities that an attacker could exploit to take control of an affected system. One of these vulnerabilities—CVE-2021-30551—has been detected in exploits in the wild. CISA encourages users a...

CISA Addresses the Rise in Ransomware Targeting Operational Technology Assets

CISA has published the Rising Ransomware Threat to OT Assets fact sheet in response to the recent increase in ransomware attacks targeting operational technology OT assets and control systems. The guidance: provides steps to prepare for, mitigate against, and respond to attacks; details how the...

Adobe Releases Security Updates for Multiple Products

Adobe has released security updates to address vulnerabilities in multiple Adobe products. An attacker could exploit some of these vulnerabilities to take control of an affected system. CISA encourages users and administrators to review Adobe’s Security Bulletins and apply the necessary updates...

SAP Releases June 2021 Security Updates

SAP has released security updates to address vulnerabilities affecting multiple products. An attacker could exploit some of these vulnerabilities to take control of an affected system. CISA encourages users and administrators to review the SAP Security Notes for June 2021 and apply the necessary...

Microsoft Releases June 2021 Security Updates

Microsoft has released updates to address multiple vulnerabilities in Microsoft software. A remote attacker can exploit some of these vulnerabilities to take control of an affected system. CISA encourages users and administrators to review Microsoft’s June 2021 Security Update Summary and...

Unpatched VMware vCenter Software

CISA is aware of the likelihood that cyber threat actors are attempting to exploit CVE-2021-21985, a remote code execution vulnerability in VMware vCenter Server and VMware Cloud Foundation. Although patches were made available on May 25, 2021, unpatched systems remain an attractive target and...

Cisco Releases Security Updates for Multiple Products

Cisco has released security updates to address vulnerabilities in multiple Cisco products. An attacker could exploit some of these vulnerabilities to take control of an affected system. For updates addressing lower severity vulnerabilities, see the Cisco Security Advisories page. CISA encourages...

Cisco Releases Security Updates for Multiple Products

Cisco has released security updates to address a vulnerability in multiple Cisco products. An attacker could exploit this vulnerability to take control of an affected system. CISA encourages users and administrators to review the following Cisco advisory and apply the necessary updates: Lasso SAM...

CISA Releases Best Practices for Mapping to MITRE ATT&CK®

As part of an effort to encourage a common language in threat actor analysis, CISA has released Best Practices for MITRE ATT&CK® Mapping. The guide shows analysts—through instructions and examples—how to map adversary behavior to the MITRE ATT&CK framework. CISA created this guide in partnership...

Mozilla Releases Security Updates for Firefox

Mozilla has released security updates to address vulnerabilities in Firefox and Firefox ESR. An attacker could exploit some of these vulnerabilities to take control of an affected system. CISA encourages users and administrators to review the Mozilla Security Advisory for Firefox 89 and Firefox E...

Joint CISA-FBI Cybersecurity Advisory on Sophisticated Spearphishing Campaign

CISA and the Federal Bureau of Investigation FBI are responding to an ongoing spearphishing campaign targeting government organizations, intergovernmental organizations, and non-governmental organizations. A sophisticated cyber threat actor leveraged a compromised end-user account from Constant...

FBI Update on Exploitation of Fortinet FortiOS Vulnerabilities

The Federal Bureau of Investigation FBI has released an FBI FLASH, APT Actors Exploiting Fortinet Vulnerabilities to Gain Access for Malicious Activity, which describes advanced persistent threat APT actors exploiting known Fortinet FortiOS vulnerabilities. APT actors may exploit these...

Microsoft Announces New Campaign from NOBELIUM

The Microsoft Threat Intelligence Center MSTIC has released information on the uncovering of a widespread malicious email campaign undertaken by the activity group that Microsoft tracks as NOBELIUM. NOBELIUM was initially identified in November 2020, during an intrusion at a major cybersecurity...

Updates to Alert on Pulse Connect Secure

CISA has updated Alert AA21-110A: Exploitation of Pulse Connect Secure Vulnerabilities to include new threat actor techniques, tactics, and procedures TTPs, indicators of compromise IOCs, and updated mitigations. CISA encourages users and administrators to review AA21-110A and the following...

Drupal Releases Security Updates

Drupal has released security updates to address a vulnerability affecting Drupal 8.9, 9.0, and 9.1. An attacker could exploit this vulnerability to take control of an affected system. CISA encourages users and administrators to review Drupal Advisory SA-CORE-2021-003 and apply the necessary updat...

VMware Releases Security Updates

VMware has released security updates to address multiple vulnerabilities in vCenter Server and Cloud Foundation. A remote attacker could exploit some of these vulnerabilities to take control of an affected system. CISA encourages users and administrators to review VMware Security Advisory...

Google Releases Security Updates for Chrome

Google has released Chrome version 91.0.4472.77 for Windows, Mac, and Linux. This version addresses vulnerabilities that an attacker could exploit to take control of an affected system. CISA encourages users and administrators to review the Chrome Release Note and apply the necessary updates. Thi...

Apple Releases Security Updates

Apple has released security updates to address vulnerabilities in multiple products. An attacker could exploit some of these vulnerabilities to take control of an affected device. CISA encourages users and administrators to review the Apple security pages for the following products and apply the...

Cisco Releases Security Updates for Multiple Products  

Cisco has released security updates to address vulnerabilities in multiple Cisco products. A remote attacker could exploit some of these vulnerabilities to take control of an affected system. For updates addressing lower severity vulnerabilities, see the Cisco Security Advisories page. CISA...

Update to CISA-FBI Joint Cybersecurity Advisory on DarkSide Ransomware

CISA and the Federal Bureau of Investigation FBI have updated Joint Cybersecurity Advisory AA21-131A: DarkSide Ransomware: Best Practices for Preventing Disruption from Ransomware Attacks, originally released May 11, 2021. This update provides a downloadable STIX file of indicators of compromise...

CISA Publishes Eviction Guidance for Networks Affected by SolarWinds and AD/M365 Compromise

CISA has released an analysis report, AR21-134A Eviction Guidance for Networks Affected by the SolarWinds and Active Directory/M365 Compromise. The report provides detailed steps for affected organizations to evict the adversary from compromised on-premises and cloud environments. Additionally,...

WordPress Releases Security Update

WordPress versions between 3.7 and 5.7.1 are affected by a security vulnerability. An attacker could exploit this vulnerability to take control of an affected system. CISA encourages users and administrators to review the WordPress Security Release and upgrade to WordPress 5.7.2. This product is...

Joint CISA-FBI Cybersecurity Advisory on DarkSide Ransomware

CISA and the Federal Bureau of Investigation FBI have released a Joint Cybersecurity Advisory CSA on a ransomware-as-a-service RaaS variant—referred to as DarkSide—recently used in a ransomware attack against a critical infrastructure CI company. Cybercriminal groups use DarkSide to gain access t...

Citrix Releases Security Updates for Workspace App for Windows

Citrix has released security updates to address a vulnerability in Citrix Workspace App for Windows. An attacker could exploit this vulnerability to take control of an affected system. CISA encourages users and administrators to review Citrix Security Update CTX307794 and apply the necessary...

Microsoft Releases May 2021 Security Updates

Microsoft has released updates to address multiple vulnerabilities in Microsoft software. A remote attacker can exploit some of these vulnerabilities to take control of an affected system. CISA encourages users and administrators to review Microsoft’s May 2021 Security Update Summary and Deployme...

Juniper Networks Releases Security Updates

Juniper Networks has released security updates to address multiple vulnerabilities in various Juniper products. An attacker could exploit some of these vulnerabilities to take control of an affected system. CISA encourages users and administrators to review Juniper's 2021-05 Out-of-Cycle Security...

Google Releases Security Updates for Chrome

Google has released Chrome version 90.0.4430.212 for Windows, Mac, and Linux. This version addresses vulnerabilities that an attacker could exploit to take control of an affected system. CISA encourages users and administrators to review the Chrome Release Note and apply the necessary updates. Th...

Adobe Releases Security Updates for Multiple Products 

Adobe has released security updates to address vulnerabilities in multiple Adobe products. An attacker could exploit some of these vulnerabilities to take control of an affected system. CISA encourages users and administrators to review Adobe’s Security Bulletins and apply the necessary updates...

Joint NCSC-CISA-FBI-NSA Cybersecurity Advisory on Russian SVR Activity

CISA has joined with the United Kingdom's National Cyber Security Centre NCSC, the Federal Bureau of Investigation FBI, and the National Security Agency NSA, in releasing a Joint Cybersecurity Advisory on Russian Foreign Intelligence Service SVR tactics, techniques, and procedures. Further TTPs...

Exim Releases Security Update

Exim has released a security update to address multiple vulnerabilities in Exim versions prior to 4.94.2. A remote attacker could exploit some of these vulnerabilities to take control of an affected system. CISA encourages users and administrators to review the Exim 4.94.2 update page and apply t...

Mozilla Releases Security Updates for Firefox

Mozilla has released security updates to address vulnerabilities in Firefox. An attacker could exploit these vulnerabilities to take control of an affected system. CISA encourages users and administrators to review the Mozilla Security Advisory for Firefox 88.0.1 and apply the necessary updates...

 Cisco Releases Security Updates for Multiple Products 

Cisco has released security updates to address vulnerabilities in multiple Cisco products. A remote attacker could exploit some of these vulnerabilities to take control of an affected system. For updates addressing lower severity vulnerabilities, see the Cisco Security Advisories page. CISA...

VMware Releases Security Update

VMware has released a security update to address a vulnerability in VMware vRealize Business for Cloud. A remote attacker could exploit this vulnerability to take control of an affected system. CISA encourages users and administrators to review VMware Security Advisory VMSA-2021-0007 and apply th...

CISA Releases Analysis Reports on New FiveHands Ransomware

CISA is aware of a recent, successful cyberattack against an organization using a new ransomware variant, known as FiveHands, that has been used to successfully conduct a cyberattack against an organization. CISA has released AR21-126A: FiveHands Ransomware and MAR-10324784-1.v1: FiveHands...

Apple Releases Security Updates

Apple has released security updates to address vulnerabilities in multiple products. An attacker could exploit some of these vulnerabilities to take control of an affected device. CISA encourages users and administrators to review the Apple security pages for the following products and apply the...

Ivanti Releases Pulse Secure Security Update

Ivanti has released a security update to address vulnerabilities affecting Pulse Connect Secure PCS software outlined in CVE-2021-22893. An attacker could exploit these vulnerabilities to gain system access and take control of an affected system. In response, CISA released AA21-110A: Exploitation...

CISA Updates Alert on Pulse Connect Secure

CISA has updated Alert AA21-110A: Exploitation of Pulse Connect Secure Vulnerabilities, originally released April 20. This update adds a new Detection section providing information on Impossible Travel and Transport Layer Security TLS Fingerprinting that may be useful in identifying malicious...

Codecov Releases New Detections for Supply Chain Compromise

CISA is aware of a compromise of the Codecov software supply chain in which a malicious threat actor made unauthorized alterations of Codecov’s Bash Uploader script, beginning on January 31, 2021. Upon discovering the compromise on April 1, 2021, Codecov immediately remediated the affected script...