CVE-2022-21990

CVE-2022-21990 is a critical vulnerability that affects the Remote Desktop Client in Microsoft Windows. This vulnerability allows an attacker to execute arbitrary code on a target system by convincing the user to connect to a malicious Remote Desktop server. The vulnerability was first reported in March 2022 and has since been patched by Microsoft.

Understanding CVE-2022-21990 is crucial for anyone who uses Remote Desktop Client in Microsoft Windows. The vulnerability allows an attacker to execute code on a target system with the same privileges as the user running the Remote Desktop Client. This means that if the user is an administrator, the attacker can take complete control of the system.

The severity and impact of CVE-2022-21990 cannot be overstated. It is a high-risk vulnerability that can result in a complete compromise of the target system. Attackers can use this vulnerability to steal sensitive data, install malware, or launch further attacks on other systems. In this article, we will explore the details of the vulnerability, the affected products, and the solutions and mitigations available to protect against it.

Key Takeaways

  • CVE-2022-21990 is a critical vulnerability that affects the Remote Desktop Client in Microsoft Windows
  • The vulnerability allows an attacker to execute arbitrary code on a target system with the same privileges as the user running the Remote Desktop Client
  • To protect against CVE-2022-21990, users should ensure that they have installed the latest security updates from Microsoft and follow best practices for securing their systems.

Understanding CVE-2022-21990

CVE-2022-21990 is a vulnerability that affects Remote Desktop Client and allows remote code execution. The vulnerability was first reported on March 9th, 2022, and has been assigned a CVSS score of 9.8 out of 10, which indicates a critical severity level.

The vulnerability is caused by a flaw in the way Remote Desktop Client handles certain requests. An attacker can exploit this vulnerability by sending a specially crafted request to a vulnerable system, causing the system to execute arbitrary code. The attacker can then take control of the system and perform various malicious activities.

The vulnerability affects multiple versions of Remote Desktop Client, and Microsoft has released a security update to address the issue. Users are advised to update their systems as soon as possible to prevent exploitation of this vulnerability.

The following table summarizes the key details of CVE-2022-21990:

EntityDetails
CoreRemote Desktop Client
CVSS9.8 (Critical)
Remote Code Execution VulnerabilityYes
SeverityCritical
Affected VersionsMultiple
FixSecurity Update Released
RecommendationUpdate Systems

CVE-2022-21990 is a critical vulnerability that affects Remote Desktop Client and allows remote code execution. Users are advised to update their systems to prevent exploitation of this vulnerability.

Severity and Impact

CVE-2022-21990 is a critical vulnerability that affects Microsoft Remote Desktop Client. The vulnerability allows an attacker to execute arbitrary code on a vulnerable system. According to the Common Vulnerability Scoring System (CVSS) Version 3.x, the severity of this vulnerability is rated as 8.8, which is considered high.

The CVSS score takes into account the impact of the vulnerability on confidentiality, integrity, and availability. In the case of CVE-2022-21990, the impact on all three areas is high, which means that an attacker could potentially gain access to sensitive information, modify or delete data, and disrupt normal operations.

The vulnerability can be exploited remotely, which means that an attacker can exploit it without having physical access to the system. This increases the potential impact of the vulnerability, as it could be used to target a large number of systems.

The impact of this vulnerability could be particularly severe for organizations that rely heavily on remote desktop connections, as it could allow an attacker to gain access to sensitive information or disrupt critical operations. It is therefore essential that organizations take immediate action to patch their systems and mitigate the risk of exploitation.

In summary, CVE-2022-21990 is a critical vulnerability that poses a significant threat to the confidentiality, integrity, and availability of affected systems. Organizations should take immediate action to patch their systems and mitigate the risk of exploitation.

Affected Products

CVE-2022-21990 is a critical vulnerability that affects various products. The vulnerability allows an attacker to execute arbitrary code on a vulnerable system.

One of the most notable products affected by CVE-2022-21990 is the Windows operating system. Specifically, the vulnerability affects all versions of Windows 10. This means that millions of users are potentially vulnerable to this exploit. Microsoft has released a patch to address the vulnerability, and users are urged to install the patch as soon as possible.

In addition to Windows, the vulnerability also affects various commercial products. The specific products affected will depend on the implementation of the Remote Desktop Client functionality within each product. Organizations that use commercial products that utilize the Remote Desktop Client functionality should ensure that they have installed the necessary patches to address the vulnerability.

Finally, the Oracle VM VirtualBox product of Oracle Virtualization is also affected by CVE-2022-21990. Specifically, versions prior to 6.1.44 and prior to 7.0.8 are vulnerable to the exploit. Oracle has released patches to address the vulnerability, and users are advised to update their software as soon as possible.

CVE-2022-21990 is a critical vulnerability that affects a wide range of products, including Windows, commercial products, and Oracle VM VirtualBox. Users and organizations are urged to take immediate action to address the vulnerability and protect their systems from potential attacks.

Attack Details

CVE-2022-21990 is a vulnerability in Microsoft’s Remote Desktop Client that allows attackers to execute code remotely. This vulnerability is rated as 8.8 out of 10 in terms of severity, making it a significant threat to organizations that use the Remote Desktop Client.

The attack vector for this vulnerability is remote, meaning that attackers can exploit it from outside of the targeted system. Attackers can exploit this vulnerability by sending a specially crafted request to the Remote Desktop Client. If the request is successful, attackers can execute code on the targeted system, potentially gaining full control over it.

The scope of this vulnerability is significant, as it affects all versions of the Remote Desktop Client for Windows. This includes the Remote Desktop Client that is included with Windows operating systems, as well as the Remote Desktop Client that is available as a separate download from Microsoft.

The attackers who exploit this vulnerability could be anyone with the technical knowledge to craft a malicious request and send it to the Remote Desktop Client. This could include cybercriminals, nation-state actors, or even insiders with malicious intent.

The most significant impact of this vulnerability is remote code execution, which means that attackers can execute code on the targeted system remotely. This could allow attackers to perform a wide range of malicious activities, such as stealing sensitive data, installing malware, or even taking full control over the targeted system.

Organizations that use the Remote Desktop Client should take immediate action to mitigate the risk posed by this vulnerability. This includes applying the latest security updates from Microsoft, disabling the Remote Desktop Client if it is not needed, and implementing additional security measures, such as firewalls and intrusion detection systems.

Solutions and Mitigations

As CVE-2022-21990 is a critical vulnerability, it is essential to take immediate action to mitigate the risk. Microsoft has released patches to address the vulnerability, and it is recommended to install them as soon as possible. The patches are available through the Microsoft Security Update Guide, and users are advised to check their system for updates and install them immediately.

In addition to installing the patches, there are other steps that users can take to mitigate the risk of exploitation. These include:

  • Restricting access to Remote Desktop Protocol (RDP): As the vulnerability is related to RDP, it is recommended to restrict access to RDP to only authorized users. This can be done by configuring firewalls and other security measures to block unauthorized access to RDP.
  • Enabling Network Level Authentication (NLA): NLA is a security feature that requires users to authenticate before establishing an RDP connection. Enabling NLA can help prevent unauthorized access to RDP, and it is recommended to enable this feature wherever possible.
  • Disabling RDP if not needed: If RDP is not needed, it is recommended to disable it altogether. This can help reduce the attack surface and mitigate the risk of exploitation.

These steps are not a substitute for installing the patches. Users are strongly advised to install the patches as soon as possible to ensure their systems are protected from exploitation.

CVE-2022-21990 is a critical vulnerability that requires immediate attention. Users should install the patches provided by Microsoft and take additional steps to mitigate the risk of exploitation. By following these recommendations, users can help protect their systems from potential attacks.

Advisories and Resources

Several advisories and resources are available for CVE-2022-21990, a Remote Desktop Client Remote Code Execution Vulnerability.

The National Vulnerability Database (NVD) provides detailed information about the vulnerability, including its severity score, vector, and metrics. The NVD also offers an analysis description of the vulnerability. Interested parties can access the NVD page for CVE-2022-21990 here.

Microsoft Corporation has also released a vendor advisory for the vulnerability. The advisory provides guidance on how to mitigate the vulnerability, including installing the latest security updates. Microsoft advises users to apply the security updates as soon as possible to avoid potential exploitation.

Third-party advisories are also available for CVE-2022-21990. For instance, the Common Vulnerabilities and Exposures (CVE) database provides a detailed report on the vulnerability, including its CVSS scores and vulnerability types. The report also lists the products affected by the vulnerability and the number of affected versions by product.

The Cybersecurity and Infrastructure Security Agency (CISA) has added CVE-2022-21990 to its Known Exploited Vulnerabilities Catalog. The catalog provides a list of vulnerabilities that are known to be actively exploited by threat actors. Interested parties can access the catalog by visiting this resource.

Users are advised to take immediate action to mitigate the vulnerability and apply the latest security updates. It is recommended that users keep their systems up to date with the latest patches and security updates to prevent potential exploitation.

Additional Information

The National Institute of Standards and Technology (NIST) has provided a detailed analysis of this vulnerability on their website. According to NIST, this vulnerability allows an attacker to execute arbitrary code on a victim’s computer by convincing the victim to connect to a malicious Remote Desktop Protocol (RDP) server. This can be achieved by sending a specially crafted RDP packet to the victim’s computer.

The Common Weakness Enumeration (CWE) ID for this vulnerability is CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer. This vulnerability is related to buffer overflow, which occurs when a program tries to write more data to a buffer than it can hold. This can cause the program to crash or allow an attacker to execute arbitrary code.

The vulnerability has undergone several changes since its discovery. The change history includes updates to the vulnerability’s description, CVSS scores, and affected products. The vulnerability is currently being managed by Microsoft Corporation, which is the Common Vulnerability and Exposures (CVE) Numbering Authority (CNA) for this vulnerability.

Known affected software configurations include Remote Desktop Protocol (RDP) clients and servers running on Windows operating systems. The vulnerability affects multiple versions of Windows, including Windows 10, Windows Server 2016, and Windows Server 2019.

The Common Platform Enumeration (CPE) 2.2 for this vulnerability is cpe:2.3:a:microsoft:remote_desktop_client::::::::. This CPE indicates that the vulnerability affects all versions of Microsoft Remote Desktop Client.

In conclusion, CVE-2022-21990 is a high-severity vulnerability that allows an attacker to execute arbitrary code on a victim’s computer. The vulnerability affects multiple versions of Windows operating systems and Microsoft Remote Desktop Client. It is recommended that affected users update their systems as soon as possible to prevent exploitation of this vulnerability.

Frequently Asked Questions

What is CVE 2022 21919?

CVE 2022 21919 is a vulnerability in Microsoft Office that allows an attacker to execute arbitrary code on a vulnerable system. The vulnerability is caused by a flaw in the way Office handles certain files. An attacker can exploit this vulnerability by convincing a user to open a specially crafted file.

How to protect against CVE 2022 21990?

To protect against CVE 2022 21990, it is recommended to apply the latest security updates from Microsoft. Additionally, users should be cautious when opening email attachments or downloading files from untrusted sources.

What are the potential impacts of CVE 2022 21990?

The potential impacts of CVE 2022 21990 include remote code execution, information disclosure, and system compromise. An attacker who successfully exploits this vulnerability can take complete control of a vulnerable system.

What is the latest update on CVE 2022 21990?

The latest update on CVE 2022 21990 is that Microsoft has released a security update to address the vulnerability. Users are advised to apply the update as soon as possible to protect their systems from potential attacks.