CVE-2021-40539 is a REST API authentication bypass vulnerability in ManageEngine's single sign-on (SSO) solution with resultant remote code execution (RCE) that exists in Zoho ManageEngine ADSelfService Plus version 6113 and prior. An actor can exploit this vulnerability by submitting a specially crafted request to a vulnerable system that causes that system to execute . Also first revealed in 2020, CVE-2020-0688 is another remote code execution vulnerability in Microsoft Exchange Server that occurs when the server fails to properly create unique keys at install time. 2022-04-21 07:00:00. Low Voltage Services Your email address will not be published. CVE-2021-34523, CVE-2021-34473, and CVE-2021-31207. Leading visibility. Zerologon has been observed in the attack chain of ransomware actors such as Ryuk and multiple public POC exploits are available. Organizations vigilance team should keep a close eye on indications of compromise (IOCs) as well as strict reporting processes. Plus, many publications have provided proof-of-concept (PoC) methodologies which anyone can copy and use. Among those highly exploited in 2021 are vulnerabilities in Microsoft, Pulse, Accellion, VMware, and Fortinet. For more information and mitigation advice on CVE-2018-13379, see the advisory here. The vulnerabilities listed allow bad actors to perform a variety of attacks, including stealing credentials, gaining access to networks, remotely executing commands, downloading and executing malware, or stealing information from devices. 3979 Freedom Circle12th Floor Santa Clara, CA 95054, 3979 Freedom Circle, 12th Floor Santa Clara, CA 95054. International cybersecurity authorities have published an overview of the most routinely exploited vulnerabilities of 2021. Log4Shell, despite being disclosed only at the end of 2021, topped the list of most-exploited vulnerabilities. From remote code execution and privilege escalation to security bypasses and path traversal, software vulnerabilities are a threat actor's stock-in-trade for initial access and compromise. CVE-2019-0604. ProxyShell consists of three separate flaws in Microsoft Exchange email server, allowing security feature bypass, RCE and elevation of privilege. Together these four vulnerabilities form an attack chain that only requires the attacker to find the server running Exchange, and the account from which they want to extract email. In addition to the much-discussed, widely abused Log4j vulnerability and the Microsoft Exchange email server bugs, the top 15 list includes CVE-2021-40539 and CVE-2021-21972, remote code execution (RCE) vulnerabilities affecting products from Zoho and VMware. Implement rigorous configuration management programs. Automated Cyber Risk Quantification Using the Balbix Platform, 9 Slides Every CISO Should Use in Their Board Presentation, Former Cisco CEO John Chambers blog on Balbixs future as an innovator in cybersecurity posture automation. U.S. Government reporting has identified the top 10 most exploited vulnerabilities by state, nonstate, and unattributed cyber actors from 2016 to 2019 as follows: CVE-2017-11882, CVE-2017-0199, CVE-2017-5638, CVE-2012-0158, CVE-2019-0604, CVE-2017-0143, CVE-2018-4878, CVE-2017-8759, CVE-2015-1641, and CVE-2018-7600. These and other known bugs, some revealed as far back as 2017, continue to be routinely abused in environments where organizations have failed to properly inventory and patch. CVE-2021-40539is a REST API authentication bypass vulnerability in ManageEngines single sign-on (SSO) solutionwith resultant remote code execution (RCE) that exists in Zoho ManageEngine ADSelfService Plus version 6113 and prior. Use protection capabilities to stop malicious activity. Other researchers chimed in saying the attacks had thus far been highly targeted and limited, and possibly the work of a single threat actor. CISA, the National Security Agency (NSA), the Federal Bureau of Investigation (FBI), the Australian Cyber Security Centre (ACSC), the Canadian Centre for Cyber Security (CCCS), the New Zealand National Cyber Security Centre (NZ NCSC), and the United Kingdoms National Cyber Security Centre (NCSC-UK) have released a joint Cybersecurity Advisorythat provides details on the top 15 Common Vulnerabilities and Exposures (CVEs) routinely exploited by malicious cyber actors in 2021, as well as other CVEs frequently exploited. Cyber actors continue to exploit publicly knownand often datedsoftware vulnerabilities against broad target sets . This vulnerability, known as Log4Shell, affects Apache's Log4j library, an open-source logging framework. The Cybersecurity and Infrastructure Security Agency (CISA) has launched an open source scanner to find applications that are vulnerable to the Log4j vulnerabilities listed as CVE-2021-44228 and CVE-2021-45046. Zoho ManageEngine ADSelfService Plus, up to and including version 6113, was found to be vulnerable to a REST API authentication bypass and subsequent remote code execution. (e.g., network access to a system, that has legacy OLE applications, which can then be used to infect other systems) The presence of a vulnerability does not mean exploitability nor increased risk For more information on CVE-2020-0688 and help with mitigation, see here. Associated Malware: FINSPY, LATENTBOT, Dridex. One-Click Integrations to Unlock the Power of XDR, Autonomous Prevention, Detection, and Response, Autonomous Runtime Protection for Workloads, Autonomous Identity & Credential Protection, The Standard for Enterprise Cybersecurity, Container, VM, and Server Workload Security, Active Directory Attack Surface Reduction, Trusted by the Worlds Leading Enterprises, The Industry Leader in Autonomous Cybersecurity, 24x7 MDR with Full-Scale Investigation & Response, Dedicated Hunting & Compromise Assessment, Customer Success with Personalized Service, Tiered Support Options for Every Organization, The Latest Cybersecurity Threats, News, & More, Get Answers to Our Most Frequently Asked Questions, Investing in the Next Generation of Security and Data, we take a look at each of the top 15 most routinely exploited bugs being used against businesses today, Staying Ahead of CVE-2022-30190 (Follina), CVE-2021-44228: Staying Secure Apache Log4j Vulnerability, Threat Landscape | The Most Dangerous Cloud Attack Methods In The Wild Today, Has MFA Failed Us? Your email address will not be published. This alert provides details on vulnerabilities routinely exploited by foreign cyber actorsprimarily Common Vulnerabilities and Exposures (CVEs) [1] to help organizations reduce the risk of these foreign threats. CVE-2021-44228, commonly referred to as Log4Shellor Logjam. 1) Virtual Private Network vulnerabilities ( CVE-2019-19781 and CVE-2019-11510) 2) Microsoft Office 365 cloud problems from increased, unprotected remote working. Confluence is a Wiki-style service widely deployed in enterprise environments. The top vulnerabilities detail how threat actors exploited newly disclosed vulnerabilities in popular services, aiming to create a massive and extended impact on organizations. YouTube or Facebook to see the content we post. Defeat every attack, at every stage of the threat lifecycle with SentinelOne. MITRE Engenuity ATT&CK Evaluation Results. Exploits and vulnerabilities cisa, acsc, the ncsc, and fbi have identified the following as the topmost exploited vulnerabilities by malicious cyber actors from 2020: cve-2019-19781, cve-2019-11510, cve-2018-13379, cve-2020-5902, cve-2020-15505, cve-2020-0688, cve-2019-3396, cve-2017-11882, cve-2019-11580, cve-2018-7600, cve 2019-18935, cve-2019-0604, cve-2020-0787, In this list are three vulnerabilities that were routinely exploited in 2020: CVE-2020-1472, CVE-2018-13379, and CVE-2019-11510. In the past 12 months, weve seen a number of new flaws, including Log4Shell, ProxyShell, and ProxyLogon, being exploited in attacks against enterprises. Original release date: July 28, 2021. Vulnerability Spotlights. Was a Microsoft MVP in consumer security for 12 years running. Their continued exploitation indicates that many organizations fail to patch software in a timely manner and remain vulnerable to malicious cyber actors. And it wouldnt hurt to continue working down the listprovided by CISA. Among those highly exploited in 2021 are vulnerabilities in Microsoft, Pulse, Accellion, VMware, and . Most Exploited Vulnerabilities in 2020 In addition to the top 10 vulnerabilities from 2016 to 2019 listed above, the U.S. Government has reported that the following vulnerabilities are being routinely exploited by sophisticated foreign cyber actors in 2020: On exploitation, the bug may allow a non-authenticated, remote attacker to download FortiProxy system files through specially crafted HTTP resource requests. The vulnerability allows an attacker to gain unauthorized access to the product through REST API endpoints by sending a specially crafted request. Based on available data to the US Government, a majority of the top vulnerabilities targeted in 2020 were disclosed during the past two years. Cybersecurity Agencies Revealed The 15 Top Routinely Exploited Vulnerabilities After over 20,000 common online vulnerabilities were disclosed in 2021, a global suite of cybersecurity. CVE-2017-5638. Required fields are marked *. Attackers started using the Exchange bugs to access vulnerable servers before establishing web shells to gain persistence and steal information. In the initial attacks by the HAFNIUM group, webshells of various types were deployed and additional tools were used to facilitate lateral movement, persistent access, and remote manipulation. Lexington Geek 2022. The bug allows a threat actor to execute commands with the same permissions as the user running the service. The flaws were initially discovered after being found leveraged in the wild by the HAFNIUM Chinese-based APT, but they have since gone on to be exploited by a wide-range of other threat actors given that the bugs exist in default configurations of widely-deployed enterprise software. Read more. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); Thanks for constructing the dashboard so promptly, Nice and informative article :) One note here QID Accellion 38830 is unavailable on Qualys and QID for Netlogon is not 91688 ,it is 91680. The advisory provides technical details of over 30 vulnerabilities that are routinely exploited by cybercriminals. The records it produces are useful for IT and security folks to trace errors or check any abnormal behavior within a system. CVE-2021-26855, CVE-2021-26857, CVE-2021-2685, and CVE-2021-27065all share the same description"This vulnerability is part of an attack chain. Additionally, it contains technical details, recommended mitigation measures, and is being provided to assist agencies and organizations . The CISA Log4j scanneris based on other open source tools and supports scanning lists of URLs, several fuzzing options, DNS callback, and payloads to circumvent web-application firewalls. Keep up to date with our weekly digest of articles. Top 10 most exploited vulnerabilities from 2016 to 2019 as follows: CVE-2017-11882, CVE-2017-0199, CVE-2017-5638, CVE-2012-0158, CVE-2019-0604, CVE-2017-0143, CVE-2018-4878, CVE-2017-8759, CVE-2015-1641, and CVE-2018-7600. Publicly disclosed computer security flaws are listed in the Common Vulnerabilities and Exposures (CVE) database. For more information on ZeroLogon see here. Attackers use them as follows: The vulnerabilities were found in Microsoft Exchange Server, which has a large userbase and which is usually set up as an Internet-facing instance. SentinelOne leads in the latest Evaluation with 100% prevention. CISA and the FBI have also highlighted several new key trends in adversarial activity in 2020, much of which is driven by new work from home trends. This remote code execution vulnerability is widely exploited due to the prevalence of the Log4j library in web applications. While the CVE description is the same for the 4 CVEs we have learned that CVE-2021-26855 is a server-side request forgery (SSRF) vulnerability in Exchange that was used to steal mailbox content. These four vulnerabilities occupy the next four positions from 6 to 9 of the 15 most routinely exploited bugs. Its been a tough twelve months or so for organizations running Microsoft Exchange server. Thank you! by Pieter Arntz. It came as a surprise to many organizations and network administrators to even learn that they had this dependency in their software stack. The joint Cybersecurity Advisory (CSA) authorities from the Five Eyes nations: USA, UK, Canada, Australia and New Zealand released a report on the Top 15 Most Exploited Software Vulnerabilities during 2021, when malicious cyber actors aggressively targeted newly disclosed critical software vulnerabilities against broad target sets that affected private and public sector organizations worldwide. You will now receive our weekly newsletter with all recent blog posts. Successful enterprise security teams understand that old vulnerabilities never go away, and while the focus and the fire drills are often around the latest CVEs to hit the news, CISAs annual list of most routinely exploited vulnerabilities offers a cautionary tale to us all: find the vulnerabilities in your software stack before threat actors do. Its important to remember that from an attackers point of view, targeting old flaws remains a successful attack vector and is less work than discovering and developing new zero days, particularly when most critical flaws typically have publicly available Proof of Concept exploit code. Here is the list of top routinely exploited vulnerabilities in 2020 and 2021 along with affected products and associated Qualys VMDR QID(s) for each vulnerability. This flaw has been exploited by both Chinese and Russian actors, and used in extended campaigns targeting COVID-19 research data during the recent pandemic. CVE-2021-44228: Perhaps the most well-documented vulnerability of 2021 was "Log4Shell," a remote code execution vulnerability in the Apache Log4j library, a widely used open-source logging framework. The software is commonly located on internal networks. CVE-2017-8759. These are the CVEs that made it into the top 10. Leading analytic coverage. Among those highly exploited in 2021 . Follow us on LinkedIn, cisa, acsc, the ncsc, and fbi have identified the following as the topmost exploited vulnerabilities by malicious cyber actors from 2020: cve-2019-19781, cve-2019-11510, cve-2018-13379, cve-2020-5902, cve-2020-15505, cve-2020-0688, cve-2019-3396, cve-2017-11882, cve-2019-11580, cve-2018-7600, cve 2019-18935, cve-2019-0604, cve-2020-0787, that security teams can detect and mitigate or remediate, CISA: Alert (AA21-209A) | Top Exploited dashboard, CVE-2021-26855, CVE-2021-26857, CVE-2021-26858, CVE-2021-27065, CVE-2021-22893, CVE-2021-22894, CVE-2021-22899, CVE-2021-22900, CVE-2021-27101, CVE-2021-27102, CVE-2021-27103, CVE-2021-27104, CVE-2018-13379, CVE-2020-12812, CVE-2019-5591. Mitigation: Update . CISA, ACSC, the NCSC, and FBI consider the vulnerabilities listed . When word of this vulnerability came out it was already clear that it was being exploited in the wild. Shortly after the vulnerability was disclosed and a patch came out, researchers noticed massive scanning activity for vulnerable instances and crypto-miners started to use the vulnerability to run their code on unpatched servers. 3031 Tisch Way, Ste. The US, Australian, Canadian, New Zealand, and UK cybersecurity agencies have also identified and revealed 21 additional security vulnerabilities commonly exploited by bad cyber actors during. On July 28, 2021, the U.S. Cybersecurity and Infrastructure Security Agency (CISA) released a cybersecurity advisory detailing the top 30 publicly known vulnerabilities that have been routinely exploited by cyber threat actors in 2020 and 2021. Endpoint Detection & Response for Servers, vulnerability in ManageEngines single sign-on (SSO) solution, Find the right solution for your business, Our sales team is ready to help. Can speak four languages. Second, you may have noticed a pattern in what made these vulnerabilities so popular to exploit: So, if you notice or hear about a vulnerability that meets these "requirements" move it to the top of your "to-patch" list. Organizations are advised to prioritize and apply patches or workarounds for these vulnerabilities as . The danger lies in the fact that these three vulnerabilities can be chained together to allow a remote attacker to run code on an unpatched Microsoft Exchange server. The RCE vulnerability CVE-2021-26857 was used to run code under the System account. This alert was issued by the Cybersecurity and Infrastructure Security Agency (CISA), the Federal Bureau of Investigation (FBI), and the broader US Government to provide technical guidance for security professionals in both the public and private sectors. This vulnerability quickly became one of the most routinely exploited vulnerabilities after a POC was released within a week of its disclosure. CISA also says that it has responded to numerous incidents at U.S. Government and commercial entities where malicious cyber threat actors have exploited CVE-2019-11510. 3) General cybersecurity weaknesses (e.g., lack of training, audits/assessments . CISA released the advisory in conjunction with the Australian Cyber Security Centre (ACSC), the United Kingdoms National Cyber Security Centre (NCSC), and the U.S. Federal Bureau of Investigation (FBI). Top Routinely Exploited CVEs in 2020 In 2021, malicious cyber actors continued to target vulnerabilities in perimeter-type devices. Save my name, email, and website in this browser for the next time I comment. CISA has released a list of routinely exploited vulnerabilities throughout the year 2020. CISA, the Australian Cyber Security Centre (ACSC), the United Kingdom's National Cyber Security Centre (NCSC), and the U.S. Federal Bureau of Investigation (FBI) have released the Joint Cybersecurity Advisory Top Routinely Exploited Vulnerabilities, which details the top vulnerabilities routinely exploited by malicious actors in 2020 and those being . Top Routinely Exploited Vulnerabilities Announcement Original Release Date: 7/28/2021 In 2020, cyber actors readily exploited recently disclosed vulnerabilities to compromise unpatched systems. You can search for these QIDs in VMDR Dashboard using the following QQL query: vulnerabilities.vulnerability.cveIds: [`CVE-2021-26855`,`CVE-2021-26857`,`CVE-2021-26858`,`CVE-2021-27065`,`CVE-2021-22893`,`CVE-2021-22894`,`CVE-2021-22899`,`CVE-2021-22900`,`CVE-2021-27101`,`CVE-2021-27102`,`CVE-2021-27103`,`CVE-2021-27104`,`CVE-2021-21985`,` CVE-2018-13379`,`CVE-2020-12812`,`CVE-2019-5591`,`CVE-2019-19781`,`CVE-2019-11510`,`CVE-2018-13379`,`CVE-2020-5902`,`CVE-2020-15505`,`CVE-2017-11882`,`CVE-2019-11580`,`CVE-2019-18935`,`CVE-2019-0604`,`CVE-2020-0787`,`CVE-2020-1472`]. Disclosed in December of 2021, the vulnerability was quickly weaponized by threat actors, and when exploited gave . Here are The 6 Best Ways to Protect Against the Most Exploited Vulnerabilities: Here is the full list of the Top 10 Most Exploited Vulnerabilities: In summary, a risk-based approach to vulnerability management will ensure that your organization is protected against not only the most common, but the vast majority of attack methods that are in use by both state-sponsored and private adversaries. Three of the top 15 routinely exploited vulnerabilities were also routinely exploited in 2020: CVE-2020-1472, CVE-2018-13379, and CVE-2019-11510. The initial attack requires the ability to make an untrusted connection to Exchange server port 443.". Having bypassed the authentication filter, attackers are able to exploit endpoints and perform attacks such as arbitrary command execution. The bug is easy to weaponize, and the software is common in the enterprise, with the flaw present in the products default configuration. If you would like to see how SentinelOne can help your organization to defend against attacks of all kinds, contact us or request a free demo. As CISA released its latest update on the most commonly exploited vulnerabilities, we take a look at each of the top 15 most routinely exploited bugs being used against businesses today. As guided by CISA, one must do the following to protect assets from being exploited: Start your Qualys VMDR trial to automatically detect and mitigate or remediate the CISA top 30 publicly known vulnerabilities that have been routinely exploited by cyber threat actors in 2020 and 2021. | News, Posted: April 29, 2022 Three of the top 15 routinely exploited vulnerabilities were also routinely exploited in 2020: CVE-2020-1472, CVE-2018-13379, and CVE-2019-11510. IT security professionals are advised to use this list alongside a similar . As details of the vulnerability emerged, responsible organizations scrambled to understand their exposure and apply patches in a timely manner, a process complicated by the fact that several early attempts to patch the bug were soon revealed to be inadequate by researchers. In 2021, malicious cyber actors continued to target vulnerabilities in perimeter-type devices. Nine of the top 15 routinely exploited flaws were remote code execution vulnerabilities, followed by two privilege escalation weaknesses. Enterprise Services Here is the full list of the Top 10 Most Exploited Vulnerabilities: CVE-2019-19781 - Citrix Application Delivery Controller vulnerability CVE-2018-7600 - Drupal remote code execution vulnerability CVE-2015-1641 - Microsoft Office memory corruption vulnerability CVE-2017-8759 - Microsoft .NET Framework Remote Code Execution Vulnerability All Rights Reserved. For more details about ProxyLogon see here. This allows attackers to carry out subsequent attacks resulting in RCE. This article has been indexed from CISA All NCAS Products This post doesn't have text content, please click on the link below to view the original article. To mitigate the threats, the cybersecurity authorities recommend prioritizing and strengthening: Vulnerability and configuration management (including software updates, operating systems, applications, and firmware in a timely manner and replace end-of-life software, Identity and access management, including enforce multifactor authentication (MFA) for all users, without exception, Properly configure and secure internet-facing network devices, disable unused or unnecessary network ports and protocols, encrypt network traffic, and disable unused network services and devices. 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