CVE-2023-31541 is a critical unrestricted file upload vulnerability discovered in the ‘Browse and upload images’ feature of the CKEditor v1.2.3 plugin for Redmine. This flaw allows arbitrary files to be uploaded to the server, creating significant security risks. With a CVSS score of 9.8, this vulnerability is categorized as critical, emphasizing the urgency for organizations to address it.
Risk to organizations includes potential unauthorized access to sensitive data and the ability for attackers to execute malicious files on the server. Given the low attack complexity and the absence of required privileges or user interaction, this vulnerability poses a serious threat to systems using the affected plugin.
Organizations should prioritize patching immediately to mitigate the risk associated with this vulnerability. The plugin's widespread use within the Redmine platform makes it a target for attackers seeking to exploit this flaw.
As of now, there are known exploits available, indicating that attackers may leverage this vulnerability in active attacks. Therefore, it is imperative for organizations to evaluate their systems for exposure to this flaw.
Vulnerability Details
The vulnerability allows an attacker to upload arbitrary files through the CKEditor plugin, which can lead to various types of attacks, including remote code execution and data theft. The CVSS 3.1 score of 9.8 reflects its critical nature, with high impacts on confidentiality, integrity, and availability.
The affected product is the CKEditor v1.2.3 plugin for Redmine, and the vulnerability was published on June 13, 2023. The primary weakness associated with this vulnerability is classified under CWE-434, indicating unrestricted file upload.
Technical Analysis
The root cause of CVE-2023-31541 is tied to insufficient validation of uploaded files within the CKEditor plugin. Attackers can exploit this vulnerability through a network attack vector, with low attack complexity, meaning that it can be executed without significant technical expertise.
The vulnerability does not require any privileges or user interaction, further increasing its risk profile. The impacts on confidentiality, integrity, and availability are all rated as high, indicating that an attacker could potentially access sensitive data, modify content, or disrupt service.
Risk & Impact Analysis
Real-world deployment of this vulnerability can lead to severe risks. Organizations using the CKEditor plugin in Redmine should consider the potential blast radius, as the ability to upload arbitrary files can lead to widespread data compromise and service disruptions.
Organizations should assess their exposure to this vulnerability and prioritize remediation based on the critical nature of the CVSS score and the potential for exploitation in the wild.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | Yes |
Public PoC | Yes |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
The vulnerability affects CKEditor v1.2.3 plugin for Redmine. All versions prior to vendor patch are vulnerable. Organizations should ensure they are using a patched version of the plugin.
Mitigation & Remediation
Organizations should prioritize patching this vulnerability by updating the CKEditor plugin to the latest version. If a patch is not available, consider disabling the upload feature or implementing strict file type validations to mitigate risks.
For further assistance, organizations can engage in penetration testing to identify weaknesses in their systems.
Detection Guidance
Monitor server logs for unusual upload patterns and check for unexpected file types being uploaded. Implement network signatures to detect potential exploitation attempts and keep an eye on file system changes in directories where uploads are permitted.
AppSecure Threat Intelligence Insight
CVE-2023-31541 highlights the critical need for organizations to implement strict file upload controls to prevent arbitrary file uploads. This vulnerability is part of a larger trend of file upload vulnerabilities that can lead to severe breaches.
Security teams should revisit their application security posture to ensure that all upload functionality is properly secured. Regular assessments, such as conducting penetration testing, can help identify weaknesses in upload functionalities.
Additionally, understanding the patterns of past vulnerabilities can inform better design practices in future developments. Organizations should consider adopting secure coding practices to mitigate risks associated with file uploads.
For further insights on securing application environments, organizations can refer to the vulnerability management program and adopt best practices.
By maintaining an ongoing focus on application security, organizations can effectively reduce their exposure to vulnerabilities like CVE-2023-31541.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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