CVE-2021-36036 is a high-severity vulnerability affecting Magento versions 2.4.2 (and earlier), 2.4.2-p1 (and earlier), and 2.3.7 (and earlier). This vulnerability allows authenticated attackers with administrative privileges to exploit an improper access control issue within the Media Gallery Upload workflow. By storing a specially crafted file in the website gallery, attackers can gain access to delete the .htaccess file. This could result in the attacker achieving remote code execution.
The vulnerability has a CVSS score of 7.2, indicating a high severity level. The risk to organizations includes potential unauthorized access and manipulation of critical files, which can lead to significant security breaches. Given the nature of this vulnerability, organizations should prioritize patching immediately.
As of now, there are no known public exploits, but the exploitation potential is classified as high, making it a critical concern for organizations using affected versions of Magento.
Organizations must be proactive in addressing this vulnerability to mitigate risks associated with unauthorized access and potential data breaches.
Vulnerability Details
The official description of CVE-2021-36036 states that it is an improper access control vulnerability within Magento's Media Gallery Upload workflow. The vulnerability allows an authenticated attacker with administrative privileges to delete the .htaccess file, potentially leading to remote code execution.
The CVSS score for this vulnerability is 7.2, categorized as high severity. It presents a significant risk due to its high impacts on confidentiality, integrity, and availability.
The affected products include various versions of Magento, specifically 2.4.2 and earlier, 2.4.2-p1 and earlier, and 2.3.7 and earlier.
Technical Analysis
The root cause of this vulnerability stems from improper access control in the Media Gallery Upload feature within Magento. Attackers may leverage this flaw by uploading specially crafted files which can compromise the integrity of the web application.
The attack vector is network-based, requiring the attacker to be authenticated with administrative privileges. The attack complexity is categorized as low, meaning that a successful attack can be executed without sophisticated skills. No user interaction is required to exploit this vulnerability.
The impacts of this vulnerability include high confidentiality, integrity, and availability loss, as the attacker could manipulate critical files and potentially execute remote code.
Risk & Impact Analysis
Organizations using affected versions of Magento face significant risks due to the potential for unauthorized access and manipulation of critical files. The blast radius of this vulnerability could extend to sensitive application data and configurations, impacting business operations and customer trust.
With the current CVSS score of 7.2, organizations are urged to prioritize patching this vulnerability immediately. The risk of exploitation is high, and the consequences can be severe if left unaddressed.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
This vulnerability affects Magento versions 2.4.2 and earlier, 2.4.2-p1 and earlier, as well as 2.3.7 and earlier. Organizations should ensure they are running the latest patched versions to mitigate risks associated with this vulnerability.
Mitigation & Remediation
Organizations are advised to patch their Magento installations as soon as possible. The latest updates from Magento should be applied to address this vulnerability. For those unable to immediately apply patches, consider implementing strict access controls and monitoring to mitigate potential exploitation.
Additionally, organizations should consider conducting regular security assessments, including application security assessments, to identify and remediate vulnerabilities proactively.
Detection Guidance
To detect potential exploitation of this vulnerability, organizations should monitor logs for unusual file access patterns, particularly attempts to delete or modify critical files like .htaccess. Behavioral anomalies in user activity, especially among administrative accounts, should also be flagged for further investigation.
AppSecure Threat Intelligence Insight
The long-term significance of CVE-2021-36036 lies in its demonstration of how improper access control can lead to severe security incidents. Security teams should take this as a reminder to regularly review and strengthen access controls across all systems, especially those handling sensitive operations.
This vulnerability also highlights the importance of patch management and timely updates as critical components of a robust security posture. Organizations should prioritize their patching processes to reduce the window of exposure to similar vulnerabilities.
To learn more about securing Magento and similar platforms, organizations can refer to our resources on web application penetration testing and penetration testing methodologies to enhance their security measures.
Finally, organizations should remain vigilant about the evolving threat landscape and continually adapt their security strategies to address new vulnerabilities.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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