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APT28 accesses poorly maintained Cisco routers and deploys malware on unpatched devices using CVE-2017-6742. Overview and Context The UK National Cyber Security Centre (NCSC), the US National Security Agency (NSA), US Cybersecurity and Infrastructure Security Agency (CISA) and US Federal Bureau of Investigation (FBI) are releasing this joint advisory to provide details of tactics, techniques…

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NCSC, NSA, CISA, and FBI have released a joint advisory to provide details of tactics, techniques, and procedures (TTPs) associated with APT28’s exploitation of Cisco routers in 2021.  By exploiting the vulnerability CVE-2017-6742, APT28 used infrastructure to masquerade Simple Network Management protocol (SNMP) access into Cisco routers worldwide, including routers in Europe, U.S. government institutions, and approximately…

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The Internal Revenue Service (IRS) has issued a reminder urging taxpayers to be vigilant and wary of new of tax-related scams. These include phishing and other fraudulent behaviors. The IRS recommends strengthening passwords, remaining vigilant against phishing attempts, and forwarding suspicious emails to phishing@irs.gov.   CISA encourages taxpayers to review the IRS Alerts and CISA’s…

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CISA has released the SBOM Sharing Lifecycle Report to the cybersecurity and supply chain community. The purpose of this report is to enumerate and describe the different parties and phases of the SBOM Sharing Lifecycle and to assist readers in choosing suitable SBOM sharing solutions based on the amount of time, resources, subject-matter expertise, effort, and access…

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Shifting the Balance of Cybersecurity Risk: Security-by-Design and Default Principles serves as a cybersecurity roadmap for manufacturers of technology and associated products. With recommendations in this guide, manufacturers are urged to put cybersecurity first, during the design phase of a product’s development lifecycle, to decrease user risk and provide out-of-the-box user protections by default at…

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Fortinet has released its April 2023 Vulnerability Advisories to address vulnerabilities affecting multiple products. An attacker could exploit one of these vulnerabilities to take control of an affected system. CISA encourages users and administrators to review the Fortinet April 2023 Vulnerability Advisories page for more information and apply the necessary updates.

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Microsoft has released Guidance for investigating attacks using CVE-2022-21894: The BlackLotus Campaign. According to Microsoft, “[t]his guide provides steps that organizations can take to assess whether users have been targeted or compromised by threat actors exploiting CVE-2022-21894 via a Unified Extensible Firmware Interface (UEFI) bootkit called BlackLotus.” An attacker could exploit this vulnerability to take control…

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CISA has released an update to the Zero Trust Maturity Model (ZTMM), superseding the initial version released in September 2021. ZTMM provides a roadmap for agencies to reference as they transition towards a zero-trust architecture. ZTMM also provides a gradient of implementation across five distinct pillars to facilitate federal implementation, allowing agencies to make minor advancements…

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Mozilla has released a security update to address vulnerabilities in Thunderbird 102.9.1. An attacker could exploit some of these vulnerabilities to take control of an affected system. CISA encourages users and administrators to review Mozilla’s Thunderbird 102.9.1 security advisory for more information and apply the necessary updates.  

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The Samba Team has released security updates addressing vulnerabilities in multiple versions of Samba. An attacker could exploit these vulnerabilities to take control of an affected system. CISA encourages users and administrators to review the following announcements and apply the necessary updates: CVE-2023-0225 CVE-2023-0922 CVE-2023-0614  

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