US CERT Current Activity
CISA Releases Seven Industrial Control Systems Advisories
Sep 14, 2023
CISA released seven Industrial Control Systems (ICS) advisories on September 14, 2023. These advisories provide timely information about current security issues, vulnerabilities, and exploits surrounding ICS. ICSA-23-257-01 Siemens SIMATIC, SIPLUS Products ICSA-23-257-02 Siemens Parasolid ICSA-23-257-03 Siemens QMS Automotive ICSA-23-257-04 Siemens RUGGEDCOM APE1808 Product ICSA-23-257-05 Siemens SIMATIC IPCs ICSA-23-257-06 Siemens WIBU Systems CodeMeter ICSA-23-257-07 Rockwell Automation Pavilion8 CISA encourages users and administrators to review the newly released ICS advisories for technical details and mitigations.
CISA Adds One Known Vulnerability to Catalog
Sep 14, 2023
CISA has added one new vulnerability to its Known Exploited Vulnerabilities Catalog, based on evidence of active exploitation. CVE-2023-26369 Adobe Acrobat and Reader Out-of-Bounds Write Vulnerability These types of vulnerabilities are frequent attack vectors for malicious cyber actors and pose significant risks to the federal enterprise. Note: To view other newly added vulnerabilities in the catalog, click on the arrow in the "Date Added to Catalog" column—which will sort by descending dates. Binding Operational Directive (BOD) 22-01: Reducing the Significant Risk of Known Exploited Vulnerabilities established the Known Exploited Vulnerabilities Catalog as a living list of known Common Vulnerabilities and Exposures (CVEs) that carry significant risk to the federal enterprise. BOD 22-01 requires Federal Civilian Executive Branch (FCEB) agencies to remediate identified vulnerabilities by the due date to protect FCEB networks against active threats. See the BOD 22-01 Fact Sheet for more information. Although BOD 22-01 only applies to FCEB agencies, CISA strongly urges all organizations to reduce their exposure to cyberattacks by prioritizing timely remediation of Catalog vulnerabilities as part of their vulnerability management practice. CISA will continue to add vulnerabilities to the catalog that meet the specified criteria.
CISA Adds Three Known Vulnerabilities to Catalog
Sep 13, 2023
CISA has added three new vulnerabilities to its Known Exploited Vulnerabilities Catalog, based on evidence of active exploitation. CVE-2023-35674 Android Framework Privilege Escalation Vulnerability CVE-2023-20269 Cisco Adaptive Security Appliance and Firepower Threat Defense Unauthorized Access Vulnerability CVE-2023-4863 Google Chrome Heap-Based Buffer Overflow Vulnerability These types of vulnerabilities are frequent attack vectors for malicious cyber actors and pose significant risks to the federal enterprise. Note: To view other newly added vulnerabilities in the catalog, click on the arrow in the "Date Added to Catalog" column—which will sort by descending dates. Binding Operational Directive (BOD) 22-01: Reducing the Significant Risk of Known Exploited Vulnerabilities established the Known Exploited Vulnerabilities Catalog as a living list of known Common Vulnerabilities and Exposures (CVEs) that carry significant risk to the federal enterprise. BOD 22-01 requires Federal Civilian Executive Branch (FCEB) agencies to remediate identified vulnerabilities by the due date to protect FCEB networks against active threats. See the BOD 22-01 Fact Sheet for more information. Although BOD 22-01 only applies to FCEB agencies, CISA strongly urges all organizations to reduce their exposure to cyberattacks by prioritizing timely remediation of Catalog vulnerabilities as part of their vulnerability management practice. CISA will continue to add vulnerabilities to the catalog that meet the specified criteria.
Mozilla Releases Security Updates for Multiple Products
Sep 13, 2023
Mozilla has released security updates to address a vulnerability affecting Firefox, Firefox ESR, and Thunderbird. A cyber threat actor can exploit this vulnerability to take control of an affected system. CISA encourages users and administrators to review Mozilla’s advisory (MFSA 2023-40) and apply the necessary updates.
Apple Releases Security Updates for iOS and macOS
Sep 12, 2023
Apple has released security updates to address a vulnerability in multiple products. A cyber threat actor could exploit this vulnerability to take control of an affected device. CISA encourages users and administrators to review the following advisories and apply the necessary updates. iOS 15.7.9 and iPadOS 15.7.9 macOS Monterey 12.6.9 macOS Big Sur 11.7.10
Microsoft Releases September 2023 Updates
Sep 12, 2023
Microsoft has released updates to address multiple vulnerabilities in Microsoft software. A cyber threat actor can exploit some of these vulnerabilities to take control of an affected system. CISA encourages users and administrators to review Microsoft’s September 2023 Security Update Guide and apply the necessary updates.
NSA, FBI, and CISA Release Cybersecurity Information Sheet on Deepfake Threats
Sep 12, 2023
Today, the National Security Agency (NSA), the Federal Bureau of Investigation (FBI), and the Cybersecurity and Infrastructure Security Agency (CISA) released a Cybersecurity Information Sheet (CSI), Contextualizing Deepfake Threats to Organizations, which provides an overview of synthetic media threats, techniques, and trends. Threats from synthetic media, such as deepfakes, have exponentially increased—presenting a growing challenge for users of modern technology and communications, including the National Security Systems (NSS), the Department of Defense (DoD), the Defense Industrial Base (DIB), and national critical infrastructure owners and operators. Between 2021 and 2022, U.S. Government agencies collaborated to establish a set of employable best practices to take in preparation and response to the growing threat. Public concern around synthetic media includes disinformation operations, designed to influence the public and spread false information about political, social, military, or economic issues to cause confusion, unrest, and uncertainty. The authoring agencies urge organizations review the CSI for recommended steps and best practices to prepare, identify, defend against, and respond to deepfake threats. To report suspicious activity or possible incidents involving deepfakes, contact one of the following agencies: Cybersecurity Report Feedback: CybersecurityReports@nsa.gov Internet Crime Complaint Center (IC3) at IC3.gov or contact a local FBI field office CISA’s Incident Reporting System or through the agency’s 24/7 Operations Center at report@cisa.gov or (888) 282-0870
CISA Releases its Open Source Software Security Roadmap
Sep 12, 2023
Today, CISA released an Open Source Software Security Roadmap to lay out—in alignment with the National Cybersecurity Strategy and the CISA Cybersecurity Strategic Plan—how we will partner with federal agencies, open source software (OSS) consumers, and the OSS community, to secure OSS infrastructure. To that end, the roadmap details four key goals: Establish CISA’s role in supporting the security of OSS, Understand the prevalence of key open source dependencies, Reduce risks to the federal government, and Harden the broader OSS ecosystem. See CISA’s Open Source Software Security Roadmap to learn more.
CISA Adds Two Known Vulnerabilities to Catalog
Sep 12, 2023
CISA has added two new vulnerabilities to its Known Exploited Vulnerabilities Catalog, based on evidence of active exploitation. CVE-2023-36761 Microsoft Word Information Disclosure Vulnerability CVE-2023-36802 Microsoft Streaming Service Proxy Elevation of Privilege Vulnerability These types of vulnerabilities are frequent attack vectors for malicious cyber actors and pose significant risks to the federal enterprise. Note: To view other newly added vulnerabilities in the catalog, click on the arrow in the "Date Added to Catalog" column—which will sort by descending dates. Binding Operational Directive (BOD) 22-01: Reducing the Significant Risk of Known Exploited Vulnerabilities established the Known Exploited Vulnerabilities Catalog as a living list of known Common Vulnerabilities and Exposures (CVEs) that carry significant risk to the federal enterprise. BOD 22-01 requires Federal Civilian Executive Branch (FCEB) agencies to remediate identified vulnerabilities by the due date to protect FCEB networks against active threats. See the BOD 22-01 Fact Sheet for more information. Although BOD 22-01 only applies to FCEB agencies, CISA strongly urges all organizations to reduce their exposure to cyberattacks by prioritizing timely remediation of Catalog vulnerabilities as part of their vulnerability management practice. CISA will continue to add vulnerabilities to the catalog that meet the specified criteria.
Adobe Releases Security Updates for Multiple Products
Sep 12, 2023
Adobe has released security updates to address vulnerabilities affecting Adobe software. A cyber threat actor can exploit one of these vulnerabilities to take control of an affected system. CISA encourages users and administrators to review the following Adobe Security Bulletins and apply the necessary updates. Adobe Connect: APSB23-33 Adobe Acrobat and Reader: APSB23-34 Adobe Experience Manager: APSB23-43
CISA Releases Three Industrial Control Systems Advisories
Sep 12, 2023
CISA released three Industrial Control Systems (ICS) advisories on September 12, 2023. These advisories provide timely information about current security issues, vulnerabilities, and exploits surrounding ICS. ICSA-23-255-01 Hitachi Energy Lumada APM Edge ICSA-23-255-02 Fujitsu Software Infrastructure Manager ICSA-23-143-03 Mitsubishi Electric MELSEC Series CPU module (Update) CISA encourages users and administrators to review the newly released ICS advisories for technical details and mitigations.
CISA Adds Two Known Vulnerabilities to Catalog
Sep 11, 2023
CISA has added two new vulnerabilities to its Known Exploited Vulnerabilities Catalog, based on evidence of active exploitation. CVE-2023-41064 Apple iOS, iPadOS, and macOS ImageIO Buffer Overflow CVE-2023-41061 Apple iOS, iPadOS, and watchOS Wallet Code Execution Vulnerability These types of vulnerabilities are frequent attack vectors for malicious cyber actors and pose significant risks to the federal enterprise. Note: To view other newly added vulnerabilities in the catalog, click on the arrow in the "Date Added to Catalog" column—which will sort by descending dates. Binding Operational Directive (BOD) 22-01: Reducing the Significant Risk of Known Exploited Vulnerabilities established the Known Exploited Vulnerabilities Catalog as a living list of known Common Vulnerabilities and Exposures (CVEs) that carry significant risk to the federal enterprise. BOD 22-01 requires Federal Civilian Executive Branch (FCEB) agencies to remediate identified vulnerabilities by the due date to protect FCEB networks against active threats. See the BOD 22-01 Fact Sheet for more information. Although BOD 22-01 only applies to FCEB agencies, CISA strongly urges all organizations to reduce their exposure to cyberattacks by prioritizing timely remediation of Catalog vulnerabilities as part of their vulnerability management practice. CISA will continue to add vulnerabilities to the catalog that meet the specified criteria.
Cisco Releases Security Advisories for Multiple Products
Sep 7, 2023
Cisco has released security advisories to address vulnerabilities affecting multiple Cisco products. A cyber threat actor can exploit some of these vulnerabilities to take control of an affected system or cause a denial-of service condition. CISA encourages users and administrators to review the following advisories and apply the necessary updates. BroadWorks and BroadWorks Xtended Identity Services Engine RADIUS
CISA, FBI, and CNMF Release Advisory on Multiple Nation-State Threat Actors Exploit CVE-2022-47966 and CVE-2022-42475
Sep 7, 2023
Today, CISA, Federal Bureau of Investigation (FBI), and U.S. Cyber Command’s Cyber National Mission Force (CNMF) published a joint Cybersecurity Advisory (CSA), Multiple Nation-State Threat Actors Exploit CVE-2022-47966 and CVE-2022-42475. This CSA provides information on an incident at an Aeronautical Sector organization, with malicious activity occurring as early as January 2023. CISA, FBI, and CNMF confirmed that nation-state advanced persistent threat (APT) actors exploited CVE-2022-47966 to gain unauthorized access to a public-facing application (Zoho ManageEngine ServiceDesk Plus), establish persistence, and move laterally through the network. This vulnerability allows for remote code execution on the ManageEngine application. Additional APT actors were also observed exploiting CVE-2022-42475 to establish presence on the organization’s firewall device. The authoring agencies urge organizations to review this CSA and implement the recommended mitigations, which align with CISA’s Cross-Sector Cybersecurity Performance Goals (CPGs)—developed by CISA and the National Institute of Standards and Technology (NIST)—as well as NSA-recommended best practices for securing infrastructure. All organizations should report suspicious or criminal activity related to information found in this joint Cybersecurity Advisory by contacting your local FBI field office and CISA’s 24/7 Operations Center at report@cisa.gov or (888) 282-0870.
CISA Releases Four Industrial Control Systems Advisories
Sep 7, 2023
CISA released four Industrial Control Systems (ICS) advisories on September 7, 2023. These advisories provide timely information about current security issues, vulnerabilities, and exploits surrounding ICS. ICSA-23-250-01 Dover Fueling Solutions MAGLINK LX Console ICSA-23-250-02 Phoenix Contact TC ROUTER and TC CLOUD CLIENT ICSA-23-250-03 Socomec MOD3GP-SY-120K ICSA-23-157-01 Delta Electronics CNCSoft-B DOPSoft (Update) CISA encourages users and administrators to review the newly released ICS advisories for technical details and mitigations.
CISA Releases Update to Threat Actors Exploiting Citrix CVE-2023-3519 to Implant Webshells
Sep 6, 2023
The Cybersecurity and Infrastructure Security Agency (CISA) has released an update to a previously published Cybersecurity Advisory (CSA), Threat Actors Exploiting Citrix CVE-2023-3519 to Implant Webshells. The CSA—originally released to warn network defenders of critical infrastructure organizations about threat actors exploiting CVE-2023-3519, an unauthenticated remote code execution (RCE) vulnerability affecting NetScaler (formerly Citrix) Application Delivery Controller (ADC) and NetScaler Gateway—contains victim information gathered in August 2023. Since July 2023, the Joint Cyber Defense Collaborative (JCDC) has facilitated continuous, real-time threat information sharing with and between partners on post-exploitation activity of CVE-2023-3519. JCDC consolidated and shared detection methods, threat actor tactics, techniques, and procedures (TTPs), and indicators of compromise (IOCs) received from industry and international partners. The updated CSA contains new TTPs as well as IOCs received from some of these partners and an additional victim. CISA strongly urges all critical infrastructure organizations to review the advisory and follow the mitigation recommendations—such as prioritizing patching known exploited vulnerabilities like Citrix CVE-2023-3519. To report incidents and anomalous activity, please contact CISA, either through the agency’s Incident Reporting System or the 24/7 Operations Center at report@cisa.gov or (888) 282-0870.
CISA Releases Capacity Enhancement Guide to Strengthen Agency Resilience to DDoS Attack
Sep 6, 2023
CISA has released actionable guidance for Federal Civilian Executive Branch (FCEB) agencies to help them evaluate and mitigate the risk of volumetric distributed denial-of-service (DDoS) attacks against their websites and related web services. The Capacity Enhancement Guide: Volumetric DDoS Against Web Services Technical Guidance: Helps agencies prioritize DDoS mitigations based on mission and reputational impact. Describes DDoS mitigation services so agencies can make risk-informed tradeoff decisions on how to use available resources most effectively. CISA encourages FCEB agencies to review the guidance and apply the recommendations. Visit Capacity Enhancement Guides for Federal Agencies for more ways to reduce cybersecurity risk.
CISA Adds One Known Vulnerability to Catalog
Sep 6, 2023
CISA has added one new vulnerability to its Known Exploited Vulnerabilities Catalog, based on evidence of active exploitation. CVE-2023-33246 Apache RocketMQ Command Execution Vulnerability These types of vulnerabilities are frequent attack vectors for malicious cyber actors and pose significant risks to the federal enterprise. Note: To view other newly added vulnerabilities in the catalog, click on the arrow in the "Date Added to Catalog" column—which will sort by descending dates. Binding Operational Directive (BOD) 22-01: Reducing the Significant Risk of Known Exploited Vulnerabilities established the Known Exploited Vulnerabilities Catalog as a living list of known Common Vulnerabilities and Exposures (CVEs) that carry significant risk to the federal enterprise. BOD 22-01 requires Federal Civilian Executive Branch (FCEB) agencies to remediate identified vulnerabilities by the due date to protect FCEB networks against active threats. See the BOD 22-01 Fact Sheet for more information. Although BOD 22-01 only applies to FCEB agencies, CISA strongly urges all organizations to reduce their exposure to cyberattacks by prioritizing timely remediation of Catalog vulnerabilities as part of their vulnerability management practice. CISA will continue to add vulnerabilities to the catalog that meet the specified criteria.
CISA Releases Two Industrial Control Systems Advisories
Sep 5, 2023
CISA released two Industrial Control Systems (ICS) advisories on September 5, 2023. These advisories provide timely information about current security issues, vulnerabilities, and exploits surrounding ICS. ICSA-23-248-01 Fujitsu Limited Real-time Video Transmission Gear IP series ICSMA-23-248-01 Softneta MedDream PACS Premium CISA encourages users and administrators to review the newly released ICS advisories for technical details and mitigations.
VMware Releases Security Update for Tools
Sep 1, 2023
VMware has released a security update to address a vulnerability in VMware Tools. A cyber threat actor can exploit this vulnerability to obtain sensitive information. CISA encourages users and administrators to review VMware Security Advisory VMSA-2023-0019 and apply the necessary update.
