Malware

Microsoft has released updates to address multiple vulnerabilities in Microsoft software. An attacker can exploit some of these vulnerabilities to take control of an affected system. CISA encourages users and administrators to review Microsoft’s August 2023 Security Update Guide and apply the necessary updates.

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Today, CISA released a strategic plan to lay out how we will fulfill our cybersecurity mission over the next three years. The CISA Cybersecurity Strategic Plan aligns the following nine objectives to specific enabling measures and measures of effectiveness to drive accountability: Increase visibility into, and ability to disrupt, cybersecurity threats and campaigns Coordinate disclosure of, hunt for, and drive mitigation of critical and exploitable vulnerabilities Plan for, exercise, and execute joint cyber defense operations…

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The U.S. Cybersecurity and Infrastructure Security Agency (CISA), National Security Agency (NSA), Federal Bureau of Investigation (FBI), and international partners are releasing a joint Cybersecurity Advisory (CSA), 2022 Top Routinely Exploited Vulnerabilities. This advisory provides details on the top Common Vulnerabilities and Exposures (CVEs) routinely exploited by malicious cyber actors in 2022, and the associated Common Weakness Enumeration(s) (CWE), to help organizations better understand the impact exploitation could have on their systems. International partners include:…

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Mozilla has released security updates to address vulnerabilities for Firefox 116, Firefox ESR 115.1, and Firefox ESR 102.14. An attacker could exploit some of these vulnerabilities to take control of an affected system. CISA encourages users and administrators to review Mozilla’s security advisories for Firefox 116, Firefox ESR 115.1, and Firefox ESR 102.14 for more information and apply the necessary updates.

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The Cybersecurity and Infrastructure Security Agency (CISA) and the Norwegian National Cyber Security Centre (NCSC-NO) have released a joint Cybersecurity Advisory (CSA), Threat Actors Exploiting Ivanti EPMM Vulnerabilities, in response to the active exploitation of CVE-2023-35078 and CVE-2023-35081 affecting Ivanti Endpoint Manager Mobile (EPMM) (formerly known as MobileIron Core). Threat actors can chain these vulnerabilities to gain initial, privileged access to EPMM systems and execute uploaded files, such as webshells.  In July 2023, NCSC-NO became…

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CISA has published three malware analysis reports on malware variants associated with exploitation of CVE-2023-2868. CVE-2023-2868 is a remote command injection vulnerability affecting Barracuda Email Security Gateway (ESG) Appliance, versions 5.1.3.001-9.2.0.006. It was exploited as a zero day as early as October 2022 to gain access to ESG appliances. According to industry reporting, the actors exploited the vulnerability to gain initial access to victim systems and then implanted backdoors to establish and maintain persistence. CISA…

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Ivanti has identified and released patches for a directory traversal vulnerability (CVE-2023-35081, CWE-22) in Ivanti Endpoint Manager Mobile (EPMM). This vulnerability allows an attacker with EPMM administrator privileges to write arbitrary files with the operating system privileges of the EPMM web application server. The attacker could then execute the uploaded file, for example, a web shell. To gain EPMM administrator privileges, the attacker could exploit CVE-2023-35078 on an unpatched system. Ivanti reports active exploitation of…

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The Australian Signals Directorate’s Australian Cyber Security Centre (ACSC), the Cybersecurity and Infrastructure Security Agency (CISA), and the National Security Agency (NSA) are releasing a joint Cybersecurity Advisory (CSA), Preventing Web Application Access Control Abuse, to warn vendors, designers, developers, and end-user organizations of web applications about insecure direct object reference (IDOR) vulnerabilities. These vulnerabilities are frequently exploited by malicious actors in data breach incidents and have resulted in the compromise of personal, financial, and…

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CISA has released an analysis and infographic detailing the findings from the 121 Risk and Vulnerability Assessments (RVAs) conducted across multiple critical infrastructure sectors in fiscal year 2022 (FY22).  The analysis details a sample attack path including tactics and steps a cyber threat actor could follow to compromise an organization with weaknesses representative of those CISA observed in FY22 RVAs. The infographic highlights the most successful techniques for each tactic that RVAs documented. Both the…

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A vulnerability discovered in Ivanti Endpoint Manager Mobile (EPMM, previously branded MobileIron Core) allows unauthenticated access to specific API paths. An attacker with access to these API paths can access personally identifiable information (PII) such as names, phone numbers, and other mobile device details for users on a vulnerable system. An attacker can also make other configuration changes, including creating an EPMM administrative account that can make further changes to a vulnerable system. Ivanti reports…

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