The Patch Tuesday January bout brings 29 security- and non-security-related updates, including four issues rated as “Important”. Meanwhile, the Log4J hunt continues, with Microsoft identifying (and patching) additional log4j-related vulnerabilities, all of them discovered weeks after the initial December disclosure. Most of the updates released by Microsoft revolved around the Chromium-based Edge browser, designed to resolve exploits such as Remote Code Execution and Elevation of Privileges.
Patch Tuesday January 2022 Roundup
Although not as galloping as December’s bout, Patch Tuesday January 2022 does have its own high notes. Microsoft’s Chromium-based browser received numerous improvements – 29, to be precise– including four patches for issues previously labeled as “Important”. The issues in question are CVE-2022-21970, CVE-22022-21930, CVE-2022-21931, and CVE-2022-21954. Microsoft’s list also contains an exploit labeled as “Moderate” – CVE-2022-21929. Apart from the patches included in the company’s monthly advisory, we should also expect patches, updates, and miscellaneous improvements for Adobe’s Acrobat Reader, Thunderbird, and Microsoft Exchange Server.
CVE-2022-21930 – Chromium-based RCE (Remote Code Execution)
A design flaw in an undisclosed Microsoft Edge component would allow a threat actor to remotely execute arbitrary code on the victim’s machine without privilege escalation. The issue was marked as solved. A security patch is available for download.
CVE-2022-21929 – Chromium-based RCE (Remote Code Execution)
Threat actors may leverage a design flaw in Microsoft Edge for the purpose of executing malicious code on the victim’s machine. CVE-2022-21929 has received an official fix at the beginning of January 2022.
CVE-2022-21931 – Chromium-based RCE (Remote Code Execution)
A flawed Edge component can be leveraged by a threat actor to execute arbitrary code on the victim’s machine. Microsoft noted that the attack surface is local-only. The threat actor does not require elevated privileges to execute the malicious package.
CVE-2022-21954 – Chromium-based Elevation of Privilege
A flaw discovered in one of Edge’s components may be leveraged by a threat actor to obtain higher privileges. The attack vector is network only. Microsoft marked the issue as resolved. A patch is available for download.
CVE-2022-21970 – Chromium-based Elevation of Privilege
A defective Chromium-based Microsoft Edge component may be leveraged by a threat actor to gain elevated privileges on the victim’s machine. The attack surface is local-only. Microsoft has already pushed a security patch to solve the issue.
Additional Cybersecurity Advice
Grabbing the latest security and non-security patches is but one of the steps you’ll need to take in order to secure your business infrastructure. For those of you who want to play it safe, here are some more actions you can take.
This content was originally published here.