CVE-2021-39166 is a high-severity vulnerability affecting Pimcore, an open-source data and experience management platform. This vulnerability allows attackers to exploit improperly escaped text-values that are printed in the version preview. Authenticated users with access to the resources can leverage this flaw to execute cross-site scripting (XSS) attacks, posing significant risks to the integrity and confidentiality of the affected systems.
This vulnerability has been assigned a CVSS score of 8, indicating a high level of severity. The potential risk to organizations includes unauthorized access to sensitive data and the possibility of malicious actions being performed within the affected applications. Given the nature of the vulnerability, organizations should prioritize patching immediately.
The vulnerability was identified in versions prior to 10.1.2 and has been patched in the latest release. Organizations using vulnerable versions should act quickly to mitigate the risks associated with this security flaw.
As of now, there is no known public exploit for this vulnerability, making it crucial for defenders to remain vigilant and ensure their systems are updated promptly.
Vulnerability Details
According to the official CVE description, Pimcore prior to version 10.1.2 does not properly escape text-values before displaying them in the version preview. This oversight allows authenticated users to execute XSS attacks. The vulnerability has been classified under CWE-79, which refers to improper neutralization of input during web page generation. The CVSS vector string for this vulnerability is CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H.
The vulnerability primarily affects the Pimcore platform, and it is important for users to recognize that the issue has been patched in version 10.1.2. Organizations running versions prior to this patch are at risk.
Technical Analysis
The root cause of this vulnerability lies in the inadequate escaping of text-values. The attack vector is through a network, with a low attack complexity, requiring low privileges and user interaction. Attackers may exploit this vulnerability by carefully crafting input that gets rendered in the version preview, allowing them to execute arbitrary scripts in the context of the affected user’s session.
The impact of successful exploitation can be severe, with potential high confidentiality, integrity, and availability implications. Confidentiality impact is rated high as sensitive user data could be exposed through XSS, while integrity and availability impacts are also assessed as high due to the potential for unauthorized modifications and service disruptions.
Risk & Impact Analysis
Risk to organizations includes possible data breaches and unauthorized access to user accounts. Given the high CVSS score, organizations should treat this vulnerability with urgency and prioritize remediation efforts in their patch management cycles. The potential blast radius of this vulnerability is significant, affecting any authenticated user with access to the resource. Therefore, the urgency for remediation is critical.
With the increasing prevalence of XSS attacks, it is imperative that organizations take proactive measures. The current status of the vulnerability suggests there are no known public exploits, but attackers continuously evolve their tactics, making vigilance essential.
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
All versions of Pimcore prior to version 10.1.2 are affected by this vulnerability. Organizations using these versions need to upgrade to the latest version to ensure their systems are secure against potential XSS attacks.
Mitigation & Remediation
Pimcore has released a patch in version 10.1.2 to address this vulnerability. Organizations should prioritize upgrading their installations to this version or later. If immediate upgrade is not possible, organizations should implement temporary workarounds, such as disabling certain features that may expose this vulnerability until the upgrade can be performed.
For organizations looking to validate the effectiveness of their remediation efforts, a thorough security assessment, including penetration testing, is recommended. Regular updates and maintenance of the system are crucial in maintaining security.
Detection Guidance
To detect potential exploitation of this vulnerability, organizations should monitor logs for unusual activity related to user inputs in version previews. Look for patterns that indicate attempts to inject scripts or other malicious content. Additionally, ensure that user permissions are properly configured to limit access to sensitive features.
AppSecure Threat Intelligence Insight
CVE-2021-39166 highlights the critical nature of input validation and output encoding in web applications. As attackers continuously refine their techniques, the importance of rigorous security testing becomes evident. Organizations must adopt a proactive approach to security, incorporating regular security assessments and staying updated with the latest patches.
For comprehensive security, organizations should consider implementing a penetration testing program to identify and remediate vulnerabilities before they can be exploited.
Finally, organizations should engage with security professionals to develop a tailored security strategy that addresses their unique needs and threats.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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