CISA Adds One Known Exploited Vulnerability to Catalog 4 Aug 2022, 9:28 pm

CISA has added one new vulnerability to its Known Exploited Vulnerabilities Catalog, based on evidence of active exploitation. These types of vulnerabilities are a frequent attack vector for malicious cyber actors and pose significant risk to the federal enterprise. Note: to view the newly added vulnerabilities in the catalog, click on the arrow in the "Date Added to Catalog" column, which will sort by descending dates. 

Binding Operational Directive (BOD) 22-01: Reducing the Significant Risk of Known Exploited Vulnerabilities established the Known Exploited Vulnerabilities Catalog as a living list of known CVEs that carry significant risk to the federal enterprise. BOD 22-01 requires FCEB agencies to remediate identified vulnerabilities by the due date to protect FCEB networks against active threats. See the BOD 22-01 Fact Sheet for more information.

Although BOD 22-01 only applies to FCEB agencies, CISA strongly urges all organizations to reduce their exposure to cyberattacks by prioritizing timely remediation of Catalog vulnerabilities as part of their vulnerability management practice. CISA will continue to add vulnerabilities to the Catalog that meet the specified criteria.

Cisco Releases Security Updates for RV Series Routers 4 Aug 2022, 1:21 pm

Cisco has released security updates to address vulnerabilities in Cisco Small Business RV160, RV260, RV340, and RV345 Series Routers. A remote attacker could exploit some of these vulnerabilities to take control of an affected system. For updates addressing lower severity vulnerabilities, see the Cisco Security Advisories page. 
 
CISA encourages users and administrators to review Cisco advisory cisco-sa-sb-mult-vuln-CbVp4SUR and apply the necessary updates.

F5 Releases Security Updates 4 Aug 2022, 11:44 am

F5 has released security updates to address vulnerabilities in multiple products. A privileged attacker could exploit some of these vulnerabilities to take control of an affected system. 

CISA encourages users and administrators to review the F5 security advisories and apply the necessary updates.

VMware Releases Security Updates 3 Aug 2022, 3:16 pm

VMware has released security updates to address multiple vulnerabilities in VMware’s Workspace ONE Access, Access Connector, Identity Manager, Identity Manager Connector, and vRealize Automation. A remote attacker could exploit some of these vulnerabilities to take control of an affected system. 

CISA encourages users and administrators to review VMware Security Advisory VMSA-2022-0021 and apply the necessary updates. 

CISA and ACSC Release Top 2021 Malware Strains 2 Aug 2022, 3:36 pm

CISA and the Australian Cyber Security Centre (ACSC) have published a joint Cybersecurity Advisory on the top malware strains observed in 2021. Malicious cyber actors often use malware to covertly compromise and then gain access to a computer or mobile device. As malicious cyber actors have been using most of these top malware strains for more than five years, organizations have opportunities to better prepare, identify, and mitigate attacks from these strains.  

CISA and ACSC encourage organizations to apply the recommendations in the Mitigations sections of the joint CSA. These mitigations include prioritizing patching all systems with known exploited vulnerabilities, enforcing multifactor authentication (MFA), securing remote desktop protocol (RDP) and other risky services, making offline backups of your data, and providing end-user awareness and training about social engineering and phishing. The appendix contains detection signatures organizations can employ in defending their networks. For more information on preventing malicious cyber actors from using 2021 top malware strains to exploit vulnerabilities, see:

•    CISA’s Known Exploited Vulnerabilities Catalog 
•    CISA’s Cyber Hygiene Services
•    CISA’s Choosing and Protecting Passwords
•    ACSC’s Implementing Multi-Factor Authentication
 

CISA Adds One Known Exploited Vulnerability to Catalog 29 Jul 2022, 3:57 pm

CISA has added one new vulnerability to its Known Exploited Vulnerabilities Catalog, based on evidence of active exploitation. These types of vulnerabilities are a frequent attack vector for malicious cyber actors and pose significant risk to the federal enterprise. Note: To view the newly added vulnerabilities in the catalog, click on the arrow in the "Date Added to Catalog" column, which will sort by descending dates.

Binding Operational Directive (BOD) 22-01: Reducing the Significant Risk of Known Exploited Vulnerabilities established the Known Exploited Vulnerabilities Catalog as a living list of known CVEs that carry significant risk to the federal enterprise. BOD 22-01 requires FCEB agencies to remediate identified vulnerabilities by the due date to protect FCEB networks against active threats. See the BOD 22-01 Fact Sheet for more information.

Although BOD 22-01 only applies to FCEB agencies, CISA strongly urges all organizations to reduce their exposure to cyberattacks by prioritizing timely remediation of Catalog vulnerabilities as part of their vulnerability management practice. CISA will continue to add vulnerabilities to the Catalog that meet the specified criteria.

CISA Releases Log4Shell-Related MAR 28 Jul 2022, 2:46 pm

From May through June 2022, CISA responded to an organization that was compromised by an exploitation of an unpatched and unmitigated Log4Shell vulnerability in a VMware Horizon server. CISA analyzed five malware samples obtained from the organization’s network and released a Malware Analysis Report of the findings.

Users and administrators are encouraged to review MAR 10386789-1.v1 for more information. For more information on Log4Shell, see:

• Joint Cybersecurity Advisory (CSA) Malicious Cyber Actors Continue to Exploit Log4Shell in VMware Horizon Systems,
• CISA’s Apache Log4j Vulnerability Guidance webpage,
• Joint CSA Mitigating Log4Shell and Other Log4j-Related Vulnerabilities, and
• CISA’s database of known vulnerable services on the CISA GitHub page.

Samba Releases Security Updates 27 Jul 2022, 8:11 pm

The Samba Team has released security updates to address vulnerabilities in multiple versions of Samba. An attacker could exploit one of these vulnerabilities to take control of an affected system. 

CISA encourages users and administrators to review the following Samba Security Announcements and apply the necessary updates and workarounds. 

•    CVE-2022-2031  
•    CVE-2022-32742
•    CVE-2022-32744
•    CVE-2022-32745
•    CVE-2022-32746

Apple Releases Security Updates for Multiple Products 22 Jul 2022, 2:59 pm

Apple has released security updates to address vulnerabilities in multiple products. These updates address vulnerabilities attackers could exploit to take control of affected systems.

CISA encourages users and administrators to review the Apple security updates and apply necessary releases.

Cisco Releases Security Updates for Multiple Products 22 Jul 2022, 2:48 pm

Cisco has released security updates to address vulnerabilities in multiple products. Some of these vulnerabilities could allow a remote attacker to execute take control of an affected system. For updates addressing lower severity vulnerabilities, see the Cisco Security Advisories page. 

CISA encourages users and administrators to review the Cisco advisories and apply the necessary updates.