CVE-2021-38018 is a medium-severity vulnerability that affects Google Chrome versions prior to 96.0.4664.45. The vulnerability arises from an inappropriate implementation in navigation, which allows remote attackers to perform domain spoofing via a crafted HTML page. This risk to organizations includes potential unauthorized access and data manipulation, emphasizing the need for immediate attention to security updates.
Given that the vulnerability has a CVSS score of 6.5, organizations should address it in their priority patch cycle. The risk is compounded by the attack vector being network-based with low complexity, requiring no privileges, though user interaction is necessary to exploit the vulnerability.
The urgency for defenders is high. Organizations should ensure that they are running updated versions of Google Chrome to prevent exploitation of this vulnerability. Failure to patch could lead to significant security breaches.
As of now, there is no known public exploit for this vulnerability, but vigilance is required to guard against potential future exploitation. Continuous monitoring and adherence to security best practices are recommended.
Vulnerability Details
The official description of CVE-2021-38018 states that it involves an inappropriate implementation in navigation in Google Chrome prior to 96.0.4664.45 that allows a remote attacker to perform domain spoofing via a crafted HTML page. This vulnerability is categorized as a medium severity issue, with a CVSS score of 6.5.
Affected systems include Google Chrome on various operating systems, including Debian and Fedora. The vulnerability was publicly disclosed on December 23, 2021.
Technical Analysis
The root cause of CVE-2021-38018 is an inappropriate implementation in the navigation feature of Google Chrome. This vulnerability is exploitable through a network attack, where an attacker can use a crafted HTML page to perform domain spoofing.
The attack complexity is low, which means that the attacker does not require significant resources or effort to exploit this vulnerability. Privileges required are none, but user interaction is necessary, as the victim must open the crafted HTML page.
In terms of impact, the confidentiality impact is none, while the integrity impact is high. There is no availability impact associated with this vulnerability.
Risk & Impact Analysis
The real-world risk of CVE-2021-38018 lies in its potential to allow attackers to spoof domains, which can lead to phishing attacks or the distribution of malicious software. With the attack vector being network-based, the potential for widespread impact increases, especially for organizations with a dispersed user base.
Organizations should prioritize patching immediately. Given the low complexity of the attack and the requirement for user interaction, organizations need to implement training and awareness programs to educate users about the risks of interacting with unknown HTML content.
It is essential to assess the urgency based on CVSS, KEV, and EPSS metrics to ensure that resources are allocated effectively to mitigate this vulnerability.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
This vulnerability affects Google Chrome versions prior to 96.0.4664.45. Additionally, it impacts various versions of Debian and Fedora, specifically Debian Linux 10.0 and 11.0, as well as Fedora 34.
Mitigation & Remediation
Organizations should prioritize applying the latest patches available for Google Chrome. The recommended version to upgrade to is 96.0.4664.45 or later. If patching is not immediately feasible, organizations should consider implementing workarounds such as blocking access to potentially harmful web pages or enhancing user training regarding safe browsing practices.
Configuration hardening is also advisable. Organizations should review their security settings within Google Chrome and consider restricting access to sensitive data or functionalities that could be exploited by attackers.
For continuous monitoring of potential threats, organizations might explore options such as continuous security testing and other proactive measures.
Detection Guidance
Organizations should monitor logs for indicators of unusual navigation behavior. Key indicators may include unexpected redirects to untrusted domains or attempts to access crafted HTML content. Behavioral anomalies should be flagged for further investigation, especially if they involve sensitive actions or data access.
Network signatures should be developed to detect potential exploitation attempts. Monitoring system changes related to browser settings or installed extensions can also help identify unauthorized modifications that may relate to this vulnerability.
AppSecure Threat Intelligence Insight
The long-term significance of CVE-2021-38018 lies in the increasing trend of domain spoofing attacks as attackers leverage vulnerabilities in widely-used applications like web browsers. This pattern underscores the necessity for organizations to maintain robust security practices, including regular updates and user training.
Security teams should assess the implications of such vulnerabilities within their threat models and understand that even medium-severity issues can have far-reaching consequences. Proactive measures, such as engaging in penetration testing methodologies, can help identify and mitigate potential risks before they are exploited.
Organizations are encouraged to adopt a comprehensive vulnerability management program to continuously evaluate their security posture and adapt to emerging threats.
In conclusion, CVE-2021-38018 represents a significant risk that organizations must address promptly. By understanding the implications of this vulnerability and implementing appropriate measures, organizations can reduce their exposure to potential exploitation.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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