Continuous Monitoring and Protection
Citrix released security updates to address multiple vulnerabilities in XenServer and Citrix Hypervisor. A cyber threat actor could exploit one of these vulnerabilities to take control of an affected system. CISA encourages users and administrators to review and apply the necessary updates: XenServer and Citrix Hypervisor Security Update for CVE-2023-46842, CVE-2024-2201 and CVE-2024-31142
Read MoreCISA is collaborating with private industry partners to respond to a recent compromise discovered by independent security researchers impacting Sisense, a company that provides data analytics services. CISA urges Sisense customers to: Reset credentials and secrets potentially exposed to, or used to access, Sisense services. Investigate—and report to CISA—any suspicious activity involving credentials potentially exposed to, or used to access, Sisense services. CISA is taking an active role in collaborating with private industry partners to…
Read MoreToday, CISA publicly issued Emergency Directive (ED) 24-02 to address the recent campaign by Russian state-sponsored cyber actor Midnight Blizzard to exfiltrate email correspondence of Federal Civilian Executive Branch (FCEB) agencies through a successful compromise of Microsoft corporate email accounts. This Directive rhttps://www.cisa.gov/news-events/directives/ed-24-02-mitigating-significant-risk-nation-state-compromise-microsoft-corporate-email-systemequires agencies to analyze the content of exfiltrated emails, reset compromised credentials, and take additional steps to secure privileged Microsoft Azure accounts. While ED 24-02 requirements only apply to FCEB agencies, other organizations…
Read MoreMicrosoft released security updates to address vulnerabilities in multiple products. A cyber threat actor could exploit some of these vulnerabilities to take control of an affected system. Users and administrators are encouraged to review the following and apply the necessary updates: Microsoft Security Update Guide for April
Read MoreIvanti has released security updates to address vulnerabilities in all supported versions (9.x and 22.x) of Ivanti Connect Secure and Policy Secure gateways. A cyber threat actor could exploit one of these vulnerabilities to take control of an affected system. Users and administrators are encouraged to review the following Ivanti advisory and apply the necessary updates: SA:CVE-2024-21894 (Heap Overflow), CVE-2024-22052 (Null Pointer Dereference), CVE-2024-22053 (Heap Overflow) and CVE-2024-22023 (XML entity expansion or XXE) for Ivanti Connect…
Read MoreToday, CISA published a new dedicated High-Risk Communities webpage comprised of cybersecurity resources to support civil society communities at heighted risk of digital security threats, including cyber hygiene guidance, a repository of local cyber volunteer programs, and free or discounted tools and services. Despite their vulnerability to advanced cyber threats, many civil society organizations operate on lean budgets and cannot significantly invest in cybersecurity. CISA’s High-Risk Communities webpage provides resources specifically for civil society organizations,…
Read MoreCISA and the open source community are responding to reports of malicious code being embedded in XZ Utils versions 5.6.0 and 5.6.1. This activity was assigned CVE-2024-3094. XZ Utils is data compression software and may be present in Linux distributions. The malicious code may allow unauthorized access to affected systems. CISA recommends developers and users to downgrade XZ Utils to an uncompromised version—such as XZ Utils 5.4.6 Stable—hunt for any malicious activity and report any…
Read MoreApple released security updates to address a vulnerability (CVE-2024-1580) in Safari and macOS. A cyber threat actor could exploit this vulnerability to take control of an affected system. CISA encourages users and administrators to review the following advisories and apply the necessary updates: Safari 17.4.1 macOS Sonoma 14.4.1 macOS Ventura 13.6.6
Read MoreToday, CISA and the Federal Bureau of Investigation (FBI) released a joint Secure by Design Alert, Eliminating SQL Injection Vulnerabilities in Software. This Alert was crafted in response to a recent, well-publicized exploitation of SQL injection (SQLi) defects in a managed file transfer application that impacted thousands of organizations. Additionally, the Alert highlights the prevalence of this class of vulnerability. Despite widespread knowledge and documentation of SQLi vulnerabilities over the past two decades, along with…
Read MoreToday, CISA, the Federal Bureau of Investigation (FBI), and the Multi-State Information Sharing and Analysis Center (MS-ISAC) released an updated joint guide, Understanding and Responding to Distributed Denial-Of-Service Attacks, to address the specific needs and challenges faced by organizations in defending against DDoS attacks. The guidance now includes detailed insight into three different types of DDoS techniques: Volumetric, attacks aiming to consume available bandwidth. Protocol, attacks which exploit vulnerabilities in network protocols. Application, attacks targeting…
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