CVE-2021-21224 is a high-severity vulnerability affecting Google Chrome versions prior to 90.0.4430.85. This vulnerability allows remote attackers to execute arbitrary code inside a sandbox by utilizing a crafted HTML page. The implications of this flaw are significant, given that it can lead to unauthorized access and manipulation of sensitive data.
The severity of this vulnerability is classified as high, with a CVSS score of 8.8. This score indicates that the attack vector is network-based, the attack complexity is low, and user interaction is required to trigger the vulnerability. Organizations must recognize the potential risks associated with this vulnerability and take appropriate action.
Given the nature of this vulnerability, organizations should prioritize patching immediately. Failure to address this vulnerability could result in severe consequences, including data breaches and other forms of cyberattacks.
As of now, this vulnerability is actively tracked in the Known Exploited Vulnerabilities (KEV) catalog, highlighting its significance in the cybersecurity landscape.
Organizations are encouraged to stay updated on this vulnerability and implement the necessary security measures to safeguard their systems.
The urgency for defenders is clear: immediate action is required to mitigate the risks associated with this vulnerability.
In summary, CVE-2021-21224 is a serious vulnerability that demands prompt attention from all users of affected Google Chrome versions.
Vulnerability Details
The official description states: Type confusion in V8 in Google Chrome prior to 90.0.4430.85 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page.
This vulnerability falls under the category of privilege escalation, allowing attackers to bypass the sandbox protections put in place by the browser. The CVSS score of 8.8 indicates a high level of risk, with significant impacts on confidentiality, integrity, and availability.
The affected product is Google Chrome, particularly any version prior to 90.0.4430.85, with the vulnerability being disclosed on April 26, 2021.
The Common Weakness Enumeration (CWE) for this vulnerability is CWE-843, which pertains to type confusion.
Technical Analysis
The root cause of CVE-2021-21224 lies in type confusion within the V8 JavaScript engine used by Google Chrome. This flaw permits attackers to manipulate the execution context, potentially leading to arbitrary code execution.
The attack vector is network-based, meaning an attacker can exploit this vulnerability remotely. The attack complexity is categorized as low, indicating that it requires minimal effort to exploit. Notably, no privileges are required to exploit this vulnerability, but user interaction is necessary, as the attack usually involves tricking the user into visiting a malicious webpage.
In terms of impact, the vulnerability poses a high risk to confidentiality, integrity, and availability. Successful exploitation could lead to unauthorized access to sensitive information, modification of data, and interruptions in service.
Risk & Impact Analysis
The deployment risk associated with CVE-2021-21224 is significant. Organizations utilizing affected versions of Google Chrome could face serious repercussions from successful exploitation, including data breaches, financial losses, and reputational damage.
The blast radius for this vulnerability is extensive, affecting not only individual users but also organizations that rely on web applications accessed through vulnerable browsers.
Considering its high CVSS score and active tracking in the KEV catalog, organizations must act urgently. Organizations should prioritize patching this vulnerability as part of their immediate security measures to mitigate potential exploitation.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | Yes |
Public PoC | Yes |
Actively Exploited | Yes |
Ransomware Use | No |
Affected Versions
The affected versions for this vulnerability include Google Chrome versions prior to 90.0.4430.85. Additional affected products include Debian Linux 10.0, Fedora 32, 33, and 34.
Mitigation & Remediation
To mitigate this vulnerability, organizations should apply updates as per vendor instructions. Users are advised to upgrade to the latest version of Google Chrome to ensure protection against this vulnerability. If a patch is not available, implementing network controls to restrict access to potentially malicious websites can help.
Organizations should also engage in continuous security testing to identify vulnerabilities in their systems. Regular penetration testing can help in validating the effectiveness of security measures.
For more information on security testing, organizations can refer to our penetration testing services.
Detection Guidance
Organizations should monitor logs for unusual behavior or anomalies that may indicate exploitation attempts. Specific indicators include unusual network traffic patterns and unexpected application behavior.
AppSecure Threat Intelligence Insight
CVE-2021-21224 reflects a critical vulnerability trend within web browsers, emphasizing the need for continuous vigilance in securing applications. Security teams must learn from this vulnerability, ensuring that they implement robust security measures throughout the software development lifecycle.
The lessons from this incident can guide future security policies, especially regarding the importance of rigorous testing and timely updates. Organizations should consider adopting a penetration testing methodology to enhance their vulnerability management programs.
In conclusion, staying informed about vulnerabilities like CVE-2021-21224 and implementing proactive measures will ensure a more secure environment for organizations.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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