Insights

Microsoft Patch Tuesday, June 2023 Edition

Microsoft Corp. today released software updates to fix dozens of security vulnerabilities in its Windows operating systems and other software. This month’s relatively light patch load has another added bonus for system administrators everywhere: It appears to be the first Patch Tuesday since March 2022 that isn’t marred by the active exploitation of a zero-day vulnerability in Microsoft’s products. June’s Patch Tuesday features updates to plug at least 70 security holes, and while none of…

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CISA Issues BOD 23-02: Mitigating the Risk from Internet-Exposed Management Interfaces

Today, CISA issued Binding Operational Directive (BOD) 23-02: Mitigating the Risk from Internet-Exposed Management Interfaces, requiring Federal Civilian Executive Branch (FCEB) agencies to reduce risks posed by internet-exposed networked management interfaces on federal information systems. This Directive applies to dedicated device interfaces that are accessible over network protocols and are meant exclusively for authorized users to perform administrative activities on a device, a group of devices, or the network itself.  Agencies must be prepared to…

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Fortinet Releases June 2023 Vulnerability Advisories

Fortinet has released its June 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 June 2023 Vulnerability Advisories page for more information and apply the necessary updates.

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Fortinet Releases Security Updates for FortiOS and FortiProxy

Fortinet has released security updates to address a heap-based buffer overflow vulnerability CVE-2023-27997 in FortiOS and FortiProxy. An attacker could exploit this vulnerability to take control of an affected system. CISA encourages users and administrators to review Fortinet security advisory FG-IR-23-097 and apply the necessary updates. For more information, see Fortinet’s Analysis of CVE-2023-27997 and Clarifications on Volt Typhoon Campaign.

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Barracuda Urges Replacing — Not Patching — Its Email Security Gateways

It’s not often that a zero-day vulnerability causes a network security vendor to urge customers to physically remove and decommission an entire line of affected hardware — as opposed to just applying software updates. But experts say that is exactly what transpired this week with Barracuda Networks, as the company struggled to combat a sprawling malware threat which appears to have undermined its email security appliances in such a fundamental way that they can no…

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VMware Releases Security Update for Aria Operations for Networks

VMware has released a security update to address multiple vulnerabilities in Aria Operations for Networks (Formerly vRealize Network Insight). The vulnerabilities were evaluated to fall within the critical severity range, as a malicious actor with network access may be able to perform a command injection attack resulting in remote code execution. Patches have been made available to remediate the vulnerabilities found in VMWare products.    CISA encourages users and administrators to review VMware Security Advisory VMSA-2023-0012 and…

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CISA and FBI Release #StopRansomware: CL0P Ransomware Gang Exploits MOVEit Vulnerability

CISA and FBI released a joint Cybersecurity Advisory (CSA) CL0P Ransomware Gang Exploits MOVEit Vulnerability in response to a recent vulnerability exploitation attributed to CL0P Ransomware Gang. This [joint guide] provides indicators of compromise (IOCs) and tactics, techniques, and procedures (TTPs) identified through FBI investigations as recently as May this year. Additionally, it provides immediate actions to help reduce the impact of CL0P ransomware.  The CL0P Ransomware Gang, also known as TA505, reportedly began exploiting a previously unknown SQL…

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Service Rents Email Addresses for Account Signups

One of the most expensive aspects of any cybercriminal operation is the time and effort it takes to constantly create large numbers of new throwaway email accounts. Now a new service offers to help dramatically cut costs associated with large-scale spam and account creation campaigns, by paying people to sell their email account credentials and letting customers temporarily rent access to a vast pool of established accounts at major providers. The service in question —…

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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…

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Ask Fitis, the Bear: Real Crooks Sign Their Malware

Code-signing certificates are supposed to help authenticate the identity of software publishers, and provide cryptographic assurance that a signed piece of software has not been altered or tampered with. Both of these qualities make stolen or ill-gotten code-signing certificates attractive to cybercriminal groups, who prize their ability to add stealth and longevity to malicious software. This post is a deep dive on “Megatraffer,” a veteran Russian hacker who has practically cornered the underground market for…

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