Malware

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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Atlassian has released its Security Bulletin for July 2023 to address vulnerabilities in Confluence Data Center & Server (CVE-2023-22505 and CVE-2023-22508) and Bamboo Data Center (CVE-2023-22506). An attacker can exploit these vulnerabilities to take control of an affected system. CISA encourages users and administrators to review Atlassian’s July 2023 Security Bulletin and apply the necessary updates.

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The Cybersecurity and Infrastructure Security Agency (CISA) released a Cybersecurity Advisory (CSA), Threat Actors Exploiting Citrix CVE-2023-3519 to Implant Webshells, to warn 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. In June 2023, threat actors exploited this vulnerability as a zero-day to drop a webshell on a critical infrastructure organization’s NetScaler ADC appliance. The webshell enabled the actors to…

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Adobe has released security updates to address a critical vulnerability (CVE-2023-38203) affecting ColdFusion. An attacker can exploit some of these vulnerabilities to take control of an affected system. CISA encourages users and administrators to review the Adobe security release APSB23-41 and apply the necessary updates.

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Citrix has released security updates to address vulnerabilities (CVE-2023-3519, CVE-2023-3466, and CVE-2023-3467) affecting NetScaler ADC and NetScaler Gateway. An attacker can exploit one of these vulnerabilities to take control of an affected system. According to Citrix, CVE-2023-3519 is being exploited on unmitigated appliances. CISA encourages users and administrators to review the Citrix security bulletin and apply the necessary updates.

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Oracle has released its Critical Patch Update Advisory, Solaris Third Party Bulletin, and Linux Bulletin for July 2023 to address vulnerabilities affecting multiple products. A remote attacker can exploit some of these vulnerabilities to take control of an affected system. CISA encourages users and administrators to review Oracle’s July 2023 Critical Patch Update Advisory, Solaris Third Party Bulletin, and Linux Bulletin and apply the necessary updates.

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CISA has developed and published a factsheet, Free Tools for Cloud Environments, to help businesses transitioning into a cloud environment identify proper tools and techniques necessary for the protection of critical assets and data security. Free Tools for Cloud Environments provides network defenders and incident response/analysts open-source tools, methods, and guidance for identifying, mitigating, and detecting cyber threats, known vulnerabilities, and anomalies while operating a cloud or hybrid environment.  Cloud service platforms and cloud service…

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Today, the National Security Agency (NSA) and CISA published 5G Network Slicing: Security Considerations for Design, Deployment, and Maintenance. This guidance—created by the Enduring Security Framework (ESF), a public-private cross-sector working group led by the NSA and CISA—presents recommendations to address some identified threats to 5G standalone network slicing, and provides industry recognized practices for the design, deployment, operation, and maintenance of a hardened 5G standalone network slice(s). This guidance builds upon the 2022 ESF…

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