CISA Urges Organizations to Patch Actively Exploited Windows SAM Bug

Cybersecurity and Infrastructure Security Agency has added to the catalog of vulnerabilities another 15 security issues actively used in cyber attacks.

US-based Cybersecurity and Infrastructure Security Agency (CISA) has added to the catalog of vulnerabilities another 15 security issues actively used in cyber attacks —warning that the vulnerabilities serve as a wake-up call to all system administrators that they need to prioritize installing security updates to protect their organizations’ networks.

CISA said system administrators that don’t put these vulnerabilities as priority will have their companies be a target for threat actors, who could breach digital premises, compromise data, or gain access to sensitive accounts.

Among the new security flaws CISA added to the catalog of actively exploited bugs, CVE-2021-36934 is the one that stands out. This is a Microsoft Windows Security Accounts Manager (Windows SAM) vulnerability that allows anyone to access the Registry database files on Windows 10 and Windows 11, extract password hashes and gain administrator privileges. However, Microsoft fixed this flaw in July 2021, but seven months later there is still a significant number of systems that need to install the update. In addition, there are workarounds for this vulnerability available here.

Of the rest, CVE-2020-0796 is another critical security flaw on CISA’s list that admins should address. The bug received the maximum severity score. It consists of erroneous handling of maliciously crafted compressed data packets by SMBv3 and it can be exploited to achieve remote code execution. The flaw can accommodate “wormable” attacks, which means that a threat actor could compromise large networks quicker and with less effort.

Back in March 2020, there were at least 48,000 systems vulnerable to CVE-2020-0796, but, as underlined by CISA’s latest report, the problem continues to persist on many systems.

CISA also added CVE-2015-2051, a remote code execution bug affecting D-Link DIR-645 routers that continues to deliver to attackers.

The most recent reports of exploitation for the particular vulnerability date from November 2021, when the BotenaGo botnet targeted millions of IoT devices and routers via a set of 33 known exploits, including CVE-2015-2051.

CISA’s list of exploited vulnerabilities is a constant reminder for organizations to deal with outdated and no longer supported hardware that is present in sensitive parts of the network since adversaries do not care how old a vulnerability is as long as it gets them in.

With the addition of the 15 flaws above, CISA’s Known Exploited Vulnerabilities Catalog now lists 367 security vulnerabilities.

The 15 flaws highlighted this time are a mix of old and new, ranging from 2014 to 2021:

CVE NumberCVE TitleRemediation Due Date
CVE-2021-36934Microsoft Windows SAM Local Privilege Escalation Vulnerability2/24/2022
CVE-2020-0796Microsoft SMBv3 Remote Code Execution Vulnerability8/10/2022
CVE-2018-1000861Jenkins Stapler Web Framework Deserialization of Untrusted Data Vulnerability8/10/2022
CVE-2017-9791Apache Struts 1 Improper Input Validation Vulnerability8/10/2022
CVE-2017-8464Microsoft Windows Shell (.lnk) Remote Code Execution Vulnerability8/10/2022
CVE-2017-10271Oracle Corporation WebLogic Server Remote Code Execution Vulnerability8/10/2022
CVE-2017-0263Microsoft Win32k Privilege Escalation Vulnerability8/10/2022
CVE-2017-0262Microsoft Office Remote Code Execution Vulnerability8/10/2022
CVE-2017-0145Microsoft SMBv1 Remote Code Execution Vulnerability8/10/2022
CVE-2017-0144Microsoft SMBv1 Remote Code Execution Vulnerability8/10/2022
CVE-2016-3088Apache ActiveMQ Improper Input Validation Vulnerability8/10/2022
CVE-2015-2051D-Link DIR-645 Router Remote Code Execution8/10/2022
CVE-2015-1635Microsoft HTTP.sys Remote Code Execution Vulnerability8/10/2022
CVE-2015-1130Apple OS X Authentication Bypass Vulnerability8/10/2022
CVE-2014-4404Apple OS X Heap-Based Buffer Overflow Vulnerability8/10/2022



Joan Banura

A journalist at heart 💜 with a passion for Tech.
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