This Joint Cybersecurity Advisory 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. Patches were released for this vulnerability in April 2019; however, multiple incidents have occurred where compromised AD credentials were used months after victim organizations patched their VPN appliance. Microsofts Security Update from May 2021 remediates all three ProxyShell vulnerabilities. After exploiting these vulnerabilities to gain initial access, threat actors deployed web shells on the compromised servers to gain persistence and make more changes. According to the alert, the top 10 most exploited vulnerabilities are: 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. TheManageEngine sitehas specific instructions on how to identify and update vulnerable installations. In this list are three vulnerabilities that were routinely exploited in 2020: CVE-2020-1472, CVE-2018-13379, and CVE-2019-11510. As you would expect from a vulnerability that has been exploited for over 4 years, it has a long and storied history and has been used to deploy ransomware as well as steal data. Vendor: CVE: Type: Citrix: CVE-2019-19781: arbitrary code execution: Pulse: CVE 2019-11510: arbitrary file reading: Fortinet: 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, The full list of the top 10 most exploited security flaws between 2016 and 2019 is embedded in the table below, with links to National . 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. Mitigation: Update . Publicly disclosed computer security flaws are listed in the Common Vulnerabilities and Exposures (CVE) database. It came as a surprise to many organizations and network administrators to even learn that they had this dependency in their software stack. In September of 2020, CISA advised that Chinese-affiliated actors were exploiting CVE-2020-0688 for remote code execution to enable email collection of targeted networks. CVE-2017-0143. Log4Shell, despite being disclosed only at the end of 2021, topped the list of most-exploited vulnerabilities. The CISA advisory is similar in scope to the October 2020 United States National Security Agency (NSA) cybersecurity advisory listing the top 25 known vulnerabilities being actively used by Chinese state-sponsored cyber actors that security teams can detect and mitigate or remediate in their infrastructure using Qualys VMDR. Which means that any attacker that is able to exploit this vulnerability immediately has access to some of the most critical parts of a corporate network. In 2021, malicious cyber actors continued to target vulnerabilities in perimeter-type devices. Vulnerability Spotlights. Using Qualys VMDR, customers can effectively prioritize this vulnerability for Active Attack RTI: With VMDR Dashboard, you can track top 30 publicly known exploited vulnerabilities, their impacted hosts, their status and overall management in real time. In February 2021, VMware disclosed that the vSphere Client (HTML5) contains a remote code execution vulnerability in a vCenter Server plugin, rating the vulnerability as Critical with a severity rating of 9.8. When word of this vulnerability came out it was already clear that it was being exploited in the wild. Disaster Recovery & Business Continuity, Top 15 Routinely Exploited Vulnerabilities in 2022. Top Routinely Exploited CVEs in 2020 In 2021, malicious cyber actors continued to target vulnerabilities in perimeter-type devices. Minimize gaps in personnel availability and consistently consume relevant threat intelligence. 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 . 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. 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. OpenSSL 3 Critical Vulnerability | What Do Organizations Need To Do Now? Its goal is to make it easier to share data across separate vulnerability capabilities (tools, databases, and services). CVE-2017-8759. The advisory states, If an organization is unable to update all software shortly after a patch is released, prioritize implementing patches for CVEs that are already known to be exploited or that would be accessible to the largest number of potential attackers (such as internet-facing systems).. Not all of the 15 most routinely exploited vulnerabilities were discovered last year; others continue to be exploited even though mitigations for them have long been available. Exploiting the vulnerability allows a remote attacker to forge an authentication token for Netlogon and to set the computer password of the domain controller to a known value. the global cybersecurity authorities observed that among the top 15 vulnerabilities that were routinely exploited by malicious hackers last year were the log4shell vulnerability, the proxylogon vulnerabilities that affected microsoft exchange email servers, the proxyshell vulnerabilities that also affect microsoft exchange email servers, and the With trending enabled for dashboard widgets, you can keep track of these vulnerabilities trends in your environment using the CISA: Alert (AA21-209A) | Top Exploited dashboard. Lexington Geek 2022. For more information on ZeroLogon see here. Original release date: July 28, 2021. When chained together in exposed environments, ProxyShell enables an attacker to establish persistence and execute malicious PowerShell commands. Detect CISA's Top Routinely Exploited Vulnerabilities using Qualys VMDR Qualys released several remote and authenticated detections (QIDs) for the vulnerabilities. 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 report serves as a reminder that bad actors don't need to develop sophisticated tools when they can just exploit publicly known vulnerabilities. This added functionality will help network defenders understand vulnerability context alongside relevant ESCU detections. 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. Nine of the top 15 routinely exploited flaws were remote code execution (RCE) vulnerabilities, followed by two privilege escalation weaknesses. Attempted mass exploitation of this vulnerability was observed in September 2021. Top vulnerabilities include: CVE-2021-44228. Your email address will not be published. Prior to ProxyShell last August came four actively-exploited zero days, collectively known as ProxyLogon in March 2021. We've teamed up with our international partners to share details of the top 15 routinely exploited vulnerabilities in 2021. CVE-2015-1641. This advisory provides details on the top 30 vulnerabilitiesprimarily Common Vulnerabilities and Exposures (CVEs)routinely exploited by malicious cyber actors in 2020 and those being widely exploited thus far in 2021 1. | News, Posted: April 29, 2022 444 Castro Street 2021 Top Routinely Exploited Vulnerabilities Executive Summary U.S., Australian, Canadian, New Zealand, and UK cybersecurity authorities assess, in 2021, malicious cyber actors aggressively targeted newly disclosed critical software vulnerabilities against broad target sets, including public and private sector organizations worldwide. After the ProxyShell entries we go straight to four vulnerabilities that are grouped under a similar nameProxyLogonfor similar reasons. Its been a tough twelve months or so for organizations running Microsoft Exchange server. CVE-2021-44228, commonly referred to as Log4Shellor Logjam. The Alert contains a table of the "top Routinely Exploited CVEs in 2020" which lists 12 vulnerabilities, including the type of vulnerabilities that are being exploited in the wild, and states . Follow us on LinkedIn, Top 15 Routinely Exploited Vulnerabilities of 2021 *Patchable with Automox. For more information on CVE-2020-0688 and help with mitigation, see here. 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. 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`]. It was clear from the start that APTthreat-actors were likely among those exploiting the vulnerability. CVE-2019-0604. Vulnerability Spotlights. 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. Nevertheless, the presence of Log4Shell at the top of the list of most routinely exploited bugs shows that there are many organizations out there that still havent taken appropriate action. Activate Malwarebytes Privacy on Windows device. Their continued exploitation indicates that many organizations fail to patch software in a timely manner and remain vulnerable to malicious cyber actors. Web & Software Development Automatic IT Asset Discovery and Inventory Tool, Cyber Risk Reporting for Board of Directors, vulnerability remediation based on CVSS base score. 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. Secure your systems and improve security for everyone. Lexington Geek is a sister company of Louisville Geek, headquartered in Louisville, KY. LexGeek provides IT support for small to medium-sized businesses throughout Central Kentucky. 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. Among those highly exploited in 2021 . The initial attack requires the ability to make an untrusted connection to Exchange server port 443.". VMware vSphere is a suite of server virtualization products for corporate infrastructure and includes ESXi hypervisor and vCenter management software. Can speak four languages. 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. Twitter, This remote code execution vulnerability is widely exploited due to the prevalence of the Log4j library in web applications. Among those highly exploited in 2021 are vulnerabilities in Microsoft, Pulse, Accellion, VMware, and Fortinet. CISA notes that these bugs, first revealed in August 2021, reside within the Microsoft Client Access Service (CAS), a service which typically runs on port 443 in Microsoft Internet Information Services (IIS), and is commonly exposed to the internet so that users can access email from mobile devices and web browsers. Since it represents the most common exploits, rather than just high severity vulnerabilities according to CVSS score, you should review this list for your own organizations exposure when trying to assess your organizations breach risk and, ultimately, improve overall security posture. For more information and mitigation on ProxyShell, see the advisories here, here, and here. Security We are hunters, reversers, exploit developers, & tinkerers shedding light on the vast world of malware, exploits, APTs, & cybercrime across all platforms. MITRE Engenuity ATT&CK Evaluation Results. ProxyLogon started out as a limited and targeted attack method attributed to a group called Hafnium. Keep up to date with our weekly digest of articles. Qualys released several remote and authenticated detections (QIDs) for the vulnerabilities. Disable unnecessary ports, protocols, and services. Cyber actors continue to exploit publicly knownand often datedsoftware vulnerabilities against broad target sets . Top Vulnerabilities The well-known Log4Shell vulnerability came in at the top of the 2021 list. Of the top 10, the three vulnerabilities used most frequently across state-sponsored cyber actors from China, Iran, North Korea, and Russia are CVE-2017-11882, CVE-2017-0199, and CVE-2012-0158. The vulnerability lies in the fact that, in attempting to implement a custom encryption algorithm in MS-NRPC, Microsoft made a critical mistake such that the initialization vector (IV) is set to all zeros rather than a random number. A joint Cybersecurity Advisory, coauthored by cybersecurity authorities of the United States (CISA, NSA, and FBI), Australia (ACSC), Canada (CCCS), New Zealand (NZ NCSC), and the United Kingdom (NCSC-UK) has detailed the top 15 Common Vulnerabilities and Exposures (CVEs) routinely exploited by malicious cyber actors in 2021, as well as other CVEs frequently exploited. You will now receive our weekly newsletter with all recent blog posts. In July 2021 and again in February 2022, CISA further advised that Russian-affiliated threat actors were exploiting CVE-2020-0688 to escalate privileges and gain remote code execution on vulnerable Microsoft Exchange servers. 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. On the Confluence Support websiteyou can find a list of affected versions, instructions to upgrade, and a workaround for those that are unable to upgrade. A patch for this vulnerability was made available on September 7, 2021. BUY A TICKET This vulnerability quickly became one of the most routinely exploited vulnerabilities after a POC was released within a week of its disclosure. CVE-2021-26084 is a critical severity security vulnerability that allows an unauthenticated user to execute arbitrary code on a Confluence Server or Data Center instance. See you soon! Many VPN gateway devices remained unpatched during 2020, with the growth of remote work options challenging the ability of organization to conduct rigorous patch management. The records it produces are useful for IT and security folks to trace errors or check any abnormal behavior within a system. 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. Malicious actors can leverage this vulnerability to compromise other devices on the network. 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, CVE-2021-34523, CVE-2021-34473, and CVE-2021-31207. Other researchers chimed in saying the attacks had thus far been highly targeted and limited, and possibly the work of a single threat actor. 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. Regular incident response exercises at the organizational level are always recommended as a proactive approach. Its a great addition, and I have confidence that customers systems are protected.". 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. When Log4Shell emerged in December 2021, what caught many by surprise was the enormous number of applications and web services, including those offered by Twitter, Apple, Google, Amazon, Steam, and Microsoft, among others, that were relying on Log4j, many of which inherited the vulnerability. Cloud Services The top 15 vulnerabilities routinely exploited in 2021 included: A vulnerability known as Log4Shell, which 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. Malicious actors are known to use automated tools to actively scan for and identify unpatched servers. Three of the top 15 routinely exploited vulnerabilities were also routinely exploited in 2020: CVE-2020-1472, CVE-2018-13379, and CVE-2019-11510. An unauthenticated remote attacker can send a specially crafted URI to perform an arbitrary file reading vulnerability. Defeat every attack, at every stage of the threat lifecycle with SentinelOne. Three of the top 15 routinely exploited vulnerabilities were also routinely exploited in 2020: CVE-2020-1472, CVE-2018-13379, and CVE-2019-11510. 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. 1) Virtual Private Network vulnerabilities ( CVE-2019-19781 and CVE-2019-11510) 2) Microsoft Office 365 cloud problems from increased, unprotected remote working. The vulnerability allows an attacker to gain unauthorized access to the product through REST API endpoints by sending a specially crafted request. 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. IT security professionals are advised to use this list alongside a similar . 2022-04-21 07:00:00. Three of the top 15 routinely exploited vulnerabilities were also routinely exploited in 2020: CVE-2020-1472, CVE-2018-13379, and CVE-2019-11510. 3031 Tisch Way, Ste. The bug allows a threat actor to execute commands with the same permissions as the user running the service. The Good, the Bad and the Ugly in Cybersecurity Week 44. Louisville Geek is a privately-owned Information Technology company that provides comprehensive managed IT services for small to medium-sized businesses and organizations throughout central Kentucky and the greater US. Their continued exploitation indicates that many organizations fail to patch software in a timely manner and remain vulnerable to malicious cyber actors. Patch systems and equipment promptly and diligently. 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. (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 The top vulnerabilities detail how threat actors exploited newly disclosed vulnerabilities in popular services, aiming to create a massive and extended impact on organizations. Zerologon has been observed in the attack chain of ransomware actors such as Ryuk and multiple public POC exploits are available. These vulnerabilities are not everywhere, but multiple steps/vulnerabilities may be required to successfully exploit a flaw. In the past 12 months, weve seen a number of new flaws, including Log4Shell, ProxyShell, and ProxyLogon, being exploited in attacks against enterprises. NCSC and allies publish advisory on the most commonly . 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). Associated Malware: FINSPY, LATENTBOT, Dridex. Run the audit below to check if you still have any devices that . Read more. 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. For more information and mitigation advice, see here. Disclosed in December of 2021, the vulnerability was quickly weaponized by threat actors, and when exploited gave . Their continued exploitation indicates that many organizations fail to patch software in a timely manner and remain vulnerable to malicious cyber actors. Mass scanning targeting vulnerable VMware vCenter servers was soon reported, and Proof of Concept code to exploit the vulnerability has been published online.
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