US CERT: Current Activity

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A regularly updated summary of the most frequent, high-impact security incidents currently being reported to the US-CERT.
Frissítve: 2 óra 3 perc
2020. április 3.

Mozilla Patches Critical Vulnerabilities in Firefox, Firefox ESR

Original release date: April 3, 2020

Mozilla has released security updates to address vulnerabilities in Firefox and Firefox ESR. An attacker could exploit these vulnerabilities to take control of an affected system. These vulnerabilities have been detected in exploits in the wild.

The Cybersecurity and Infrastructure Security Agency (CISA) encourages users and administrators to review Mozilla’s security advisory for Firefox 74.0.1 and Firefox ESR 68.6.1 and apply the necessary update.

This product is provided subject to this Notification and this Privacy & Use policy.

2020. április 2.

FBI Releases Guidance on Defending Against VTC Hijacking and Zoom-bombing

Original release date: April 2, 2020

The Federal Bureau of Investigation (FBI) has released an article on defending against video-teleconferencing (VTC) hijacking (referred to as “Zoom-bombing” when attacks are to the Zoom VTC platform).  Many organizations and individuals are increasingly dependent on VTC platforms, such as Zoom and Microsoft Teams, to stay connected during the Coronavirus Disease 2019 (COVID-19) pandemic. The FBI has released this guidance in response to an increase in reports of VTC hijacking.

The Cybersecurity and Infrastructure Security Agency encourages users and administrators to review the FBI article as well as the following steps to improve VTC cybersecurity:

  • Ensure meetings are private, either by requiring a password for entry or controlling guest access from a waiting room.
  • Consider security requirements when selecting vendors. For example, if end-to-end encryption is necessary, does the vendor offer it?
  • Ensure VTC software is up to date. See Understanding Patches and Software Updates.

CISA also recommends the following VTC cybersecurity resources:

This product is provided subject to this Notification and this Privacy & Use policy.

2020. április 1.

MS-ISAC Releases Advisory on DrayTek Devices

Original release date: April 1, 2020

The Multi-State Information Sharing & Analysis Center (MS-ISAC) has released an advisory regarding two vulnerable command injection points in DrayTek devices (CVE-2020-8515). An attacker could exploit these vulnerabilities to take control of an affected system. These vulnerabilities were detected in exploits in the wild.

The Cybersecurity and Infrastructure Security Agency (CISA) encourages users and administrators to review MS-ISAC Advisory 2020-043 and the DrayTek Security Advisory for CVE-2020-8515 and apply the necessary updates and mitigations.

This product is provided subject to this Notification and this Privacy & Use policy.

2020. április 1.

Google Releases Security Updates for Chrome

Original release date: April 1, 2020

Google has released Chrome version 80.0.3987.162 for Windows, Mac, and Linux. This version addresses vulnerabilities that an attacker could exploit to take control of an affected system.

The Cybersecurity and Infrastructure Security Agency (CISA) encourages users and administrators to review the Chrome Release and apply the necessary updates.

This product is provided subject to this Notification and this Privacy & Use policy.

2020. március 25.

Apple Releases Security Updates

Original release date: March 25, 2020

Apple has released security updates to address vulnerabilities in multiple products. An attacker could exploit some of these vulnerabilities to take control of an affected system.

The Cybersecurity and Infrastructure Security Agency (CISA) encourages users and administrators to review the Apple security pages for the following products and apply the necessary updates:

This product is provided subject to this Notification and this Privacy & Use policy.

2020. március 25.

Adobe Releases Security Update for Creative Cloud Desktop Application

Original release date: March 25, 2020

Adobe has released a security update to address a vulnerability in Creative Cloud Desktop Application. An attacker could exploit this vulnerability to take control of an affected system.

The Cybersecurity and Infrastructure Security Agency (CISA) encourages users and administrators to review Adobe Security Bulletin APSB20-11 and apply the necessary update.

This product is provided subject to this Notification and this Privacy & Use policy.

2020. március 23.

Microsoft RCE Vulnerabilities Affecting Windows, Windows Server

Original release date: March 23, 2020

Microsoft has released a security advisory to address remote code execution vulnerabilities in Adobe Type Manager Library affecting all currently supported versions of Windows and Windows Server operating systems. A remote attacker can exploit these vulnerabilities to take control of an affected system. Microsoft is aware of limited, targeted attacks exploiting these vulnerabilities in the wild.

The Cybersecurity and Infrastructure Security Agency (CISA) encourages users and administrators to review Microsoft Advisory ADV200006 and the CERT Coordination Center (CERT/CC) Vulnerability Note VU#354840 for more information and apply the necessary mitigations until patches are made available.

This product is provided subject to this Notification and this Privacy & Use policy.

2020. március 19.

Drupal Releases Security Updates

Original release date: March 19, 2020

Drupal has released security updates to address vulnerabilities affecting Drupal 8.7.x and 8.8.x. An attacker could exploit these vulnerabilities to take control of an affected system.

The Cybersecurity and Infrastructure Security Agency (CISA) encourages users and administrators to review the Drupal security release and apply the necessary updates or mitigations.

This product is provided subject to this Notification and this Privacy & Use policy.

2020. március 19.

Cisco Releases Security Updates for SD-WAN Solution Software

Original release date: March 19, 2020

Cisco has released security updates to address multiple vulnerabilities in SD-WAN Solution software. An attacker could exploit these vulnerabilities to take control of an affected system. For updates addressing lower severity vulnerabilities, see the Cisco Security Advisories webpage.

The Cybersecurity and Infrastructure Security Agency (CISA) encourages users and administrators to review the following Cisco advisories and apply the necessary updates.

This product is provided subject to this Notification and this Privacy & Use policy.

2020. március 19.

Google Releases Security Updates for Chrome

Original release date: March 19, 2020

Google has released Chrome version 80.0.3987.149 for Windows, Mac, and Linux. This version addresses vulnerabilities that an attacker could exploit to take control of an affected system.

The Cybersecurity and Infrastructure Security Agency (CISA) encourages users and administrators to review the Chrome Release and apply the necessary updates.

 

This product is provided subject to this Notification and this Privacy & Use policy.

2020. március 18.

Adobe Releases Security Updates for Multiple Products

Original release date: March 18, 2020

Adobe has released security updates to address vulnerabilities in multiple products. An attacker could exploit some of these vulnerabilities to take control of an affected system.

The Cybersecurity and Infrastructure Security Agency (CISA) encourages users and administrators to review the following Adobe Security Bulletins and apply the necessary updates.

This product is provided subject to this Notification and this Privacy & Use policy.

2020. március 16.

VMware Releases Security Updates for Multiple Products

Original release date: March 16, 2020

VMware has released security updates to address vulnerabilities in multiple products. An attacker could exploit these vulnerabilities to take control of an affected system.

The Cybersecurity and Infrastructure Security Agency (CISA) encourages users and administrators to review VMware Security Advisory VMSA-2020-0004 and apply the necessary updates.

This product is provided subject to this Notification and this Privacy & Use policy.

2020. március 12.

Microsoft Releases Out-of-Band Security Updates for SMB RCE Vulnerability

Original release date: March 12, 2020

Microsoft has released out-of-band security updates to address a remote code execution vulnerability (CVE-2020-0796) in Microsoft Server Message Block 3.1.1 (SMBv3). A remote attacker could exploit this vulnerability to take control of an affected system.
 
The Cybersecurity and Infrastructure Security Agency (CISA) encourages users and administrators to review the following resources and apply the necessary updates or workarounds.
•    Microsoft Security Guidance for CVE-2020-0796
•    Microsoft Advisory ADV200005
•    CERT Coordination Center’s Vulnerability Note VU#872016

This product is provided subject to this Notification and this Privacy & Use policy.

2020. március 11.

Microsoft Server Message Block RCE Vulnerability

Original release date: March 11, 2020

Microsoft has released a security advisory to address a remote code execution vulnerability (CVE-2020-0796) in Microsoft Server Message Block 3.1.1 (SMBv3). A remote attacker can exploit this vulnerability to take control of an affected system. SMB is a network file-sharing protocol that allows client machines to access files on servers.

The Cybersecurity and Infrastructure Security Agency (CISA) encourages users and administrators to review Microsoft Advisory ADV200005 and the CERT Coordination Center’s Vulnerability Note VU#872016 and apply the workaround until patches are made available.

This product is provided subject to this Notification and this Privacy & Use policy.

2020. március 10.

Unpatched Microsoft Exchange Servers Vulnerable to CVE-2020-0688

Original release date: March 10, 2020

Microsoft Exchange Servers affected by a remote code execution vulnerability, known as CVE-2020-0688, continue to be an attractive target for malicious cyber actors. A remote attacker can exploit this vulnerability to take control of an affected system that is unpatched.

Although Microsoft disclosed the vulnerability and provided software patches for the various affected products in February 2020, advanced persistent threat actors are targeting unpatched servers, according to recent open-source reports. The Cybersecurity and Infrastructure Security Agency (CISA) urges users and administrators review Microsoft’s Advisory and the National Security Agency’s tweet on CVE-2020-0688 for more information and apply the necessary patches as soon as possible.

This product is provided subject to this Notification and this Privacy & Use policy.

2020. március 10.

Microsoft Releases March 2020 Security Updates

Original release date: March 10, 2020

Microsoft has released updates to address multiple vulnerabilities in Microsoft software. A remote attacker could exploit some of these vulnerabilities to take control of an affected system.

The Cybersecurity and Infrastructure Security Agency (CISA) encourages users and administrators to review Microsoft’s March 2020 Security Update Summary and Deployment Information and apply the necessary updates.

This product is provided subject to this Notification and this Privacy & Use policy.

2020. március 10.

Intel Releases Security Updates

Original release date: March 10, 2020

Intel has released security updates to address vulnerabilities in multiple products. An authenticated attacker with local access could exploit some of these vulnerabilities to gain escalation of privileges.

The Cybersecurity and Infrastructure Security Agency (CISA) encourages users and administrators to review the following Intel advisories and apply the necessary updates:

This product is provided subject to this Notification and this Privacy & Use policy.

2020. március 10.

Mozilla Releases Security Updates for Firefox and Firefox ESR

Original release date: March 10, 2020

Mozilla has released security updates to address vulnerabilities in Firefox and Firefox ESR. An attacker could exploit some of these vulnerabilities to take control of an affected system.

The Cybersecurity and Infrastructure Security Agency (CISA) encourages users and administrators to review the Mozilla Security Advisories for Firefox 74 and Firefox ESR 68.6 and apply the necessary updates.

This product is provided subject to this Notification and this Privacy & Use policy.

2020. március 6.

Zoho Releases Security Update on ManageEngine Desktop Central

Original release date: March 6, 2020

Zoho has released a security update on a vulnerability (CVE-2020-10189) affecting ManageEngine Desktop Central build 10.0.473 and below. A remote attacker could exploit this vulnerability to take control of an affected system. ManageEngine Desktop Central is a unified endpoint management solution that helps companies, including managed service providers (MSPs), to control servers, laptops, smartphones, and tablets from a central location.

The Cybersecurity and Infrastructure Security Agency encourages users and administrators to review the Zoho security update for more information and apply the patch.

This product is provided subject to this Notification and this Privacy & Use policy.

2020. március 6.

Defending Against COVID-19 Cyber Scams

Original release date: March 6, 2020

The Cybersecurity and Infrastructure Security Agency (CISA) warns individuals to remain vigilant for scams related to Coronavirus Disease 2019 (COVID-19). Cyber actors may send emails with malicious attachments or links to fraudulent websites to trick victims into revealing sensitive information or donating to fraudulent charities or causes. Exercise caution in handling any email with a COVID-19-related subject line, attachment, or hyperlink, and be wary of social media pleas, texts, or calls related to COVID-19.

CISA encourages individuals to remain vigilant and take the following precautions.

This product is provided subject to this Notification and this Privacy & Use policy.