CISA and Partners Release Joint Guide to Securing Remote Access Software
Today, CISA, Federal Bureau of Investigation (FBI), the National Security Agency (NSA), Multi-State Information Sharing and Analysis Center (MS-ISAC), and the Israel National Cyber Directorate (INCD) released the Guide to Securing Remote Access Software. This new joint guide is the result of a collaborative effort to provide an overview of legitimate uses of remote access software, as well as common exploitations and associated tactics, techniques, and procedures (TTPs), and how to detect and defend against malicious actors abusing this software.
Remote access software provides organizations with a broad array of capabilities to maintain and improve information technology (IT), operational technology (OT), and industrial control system (ICS) services; however, malicious actors often exploit this software for easy and broad access to victim systems.
CISA encourages organizations to review this joint guide for recommendations and best practices to implement in alignment with their specific cybersecurity requirements to better detect and defend against exploitation. Additionally, please refer to the additional information below on guidance for MSPs and small- and mid-sized businesses and on malicious use of remote monitoring and management software in using remote software and implementing mitigations.
CISA and Partners Release the Guide to Securing Remote Access Software
Today, CISA, the Federal Bureau of Investigation (FBI), the National Security Agency (NSA), the Multi-State Information Sharing and Analysis Center (MS-ISAC), and the Israel National Cyber Directorate (INCD) published the Guide to Securing Remote Access Software to provide organizations with an overview of common remote access exploitations and associated tactics, techniques, and procedures (TTPs).
The Guide to Securing Remote Access Software provides organizations with a remote access software overview, including the malicious use of remote access software, detection methods, and recommendations for all organizations. Remote access software provides a proactive and flexible approach for organizations to internally oversee networks, computers, and other devices; however, cyber threat actors increasingly co-opt these tools for access to victim systems.
CISA encourages organizations to use the provided additional information on remote management and on malicious use of remote monitoring and management software in implementing remote software and remote software mitigations.
CISA Adds Two Known Exploited Vulnerabilities to Catalog
CISA has added two new vulnerabilities to its Known Exploited Vulnerabilities Catalog, based on evidence of active exploitation.
CVE-2023-33009 Zyxel Multiple Firewalls Buffer Overflow Vulnerability
CVE-2023-33010 Zyxel Multiple Firewalls 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.
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Progress Software Releases Security Advisory for MOVEit Transfer
Progress Software has released a security advisory for a vulnerability in MOVEit Transfer—a Managed File Transfer Software. A cyber threat actor could exploit this vulnerability to take over an affected system.
CISA urgers users and organizations to review the MOVEit Transfer Advisory, follow the mitigation steps, apply the necessary updates, and hunt for any malicious activity.
CISA Releases Five Industrial Control Systems Advisories
CISA released five Industrial Control Systems (ICS) advisories on June 1, 2023. These advisories provide timely information about current security issues, vulnerabilities, and exploits surrounding ICS.
ICSA-23-152-01 Advantech WebAccess-SCADA
ICSA-23-152-02 HID Global SAFE
ICSA-22-256-03 Delta Electronics DIAEnergie (Update A)
ICSA-22-333-05 Mitsubishi Electric FA Engineering Software (Update A)
ICSA-21-096-01 Hitachi Energy Relion 670 650 SAM600IO (Update B)
CISA encourages users and administrators to review the newly released ICS advisories for technical details and mitigations.
CISA Warns of Hurricane/Typhoon-Related Scams
CISA urges users to remain on alert for malicious cyber activity following a natural disaster such as a hurricane or typhoon, as attackers target potential disaster victims by leveraging social engineering tactics, techniques, and procedures (TTPs). Social engineering TTPs include phishing attacks that use email or malicious websites to solicit personal information by posing as a trustworthy organization, notably as charities providing relief. Exercise caution in handling emails with hurricane/typhoon-related subject lines, attachments, or hyperlinks to avoid compromise. In addition, be wary of social media pleas, texts, or door-to-door solicitations related to severe weather events.
CISA encourages users to review the Federal Trade Commission’s Staying Alert to Disaster-related Scams and Before Giving to a Charity, and CISA’s Using Caution with Email Attachments and Tips on Avoiding Social Engineering and Phishing Attacks to avoid falling victim to malicious attacks.