Original release date: January 13, 2022

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

CISA encourages users and administrators to review the Juniper Networks security advisories page and apply the necessary updates.

Original release date: January 13, 2022

Apple has released security updates to address a vulnerability affecting iOS 15.2.1 and iPadOS 15.2.1. An attacker could exploit this vulnerability to cause a denial-of-service condition. 

CISA encourages users and administrators to review the Apple security page for iOS 15.2.1 and iPadOS 15.2.1 and apply the necessary updates.

Original release date: January 12, 2022

U.S. Cyber Command’s Cyber National Mission Force (CNMF) has identified multiple open-source tools used by an Iranian advanced persistent threat (APT) group known as MuddyWater. According to CNMF, “MuddyWater has been seen using a variety of techniques to maintain access to victim networks. These include side-loading DLLs in order to trick legitimate programs into running malware and obfuscating PowerShell scripts to hide command and control functions.” U.S. Cyber Command has released malware samples attributed to MuddyWater to the malware aggregation tool and repository, VirusTotal.

CISA encourages users and administrators to review U.S. Cyber Command’s press release, Iranian intel cyber suite of malware uses open source tools, as well as their VirusTotal page for more information.

Original release date: January 11, 2022

Citrix has released a security update to address a vulnerability in Workspace App for Linux. An attacker could exploit this vulnerability to take control of an affected system.

CISA encourages users and administrators to review Citrix Security Update CTX338435 and apply the necessary update.

Original release date: January 11, 2022

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

CISA encourages users and administrators to review Microsoft’s January 2022 Security Update 
Summary and Deployment Information and apply the necessary updates.