CVE-2021-39174 is a high-severity vulnerability affecting catchethq's catchet. This vulnerability allows authenticated users, regardless of their privileges, to leak sensitive configuration data from the dotenv file, including the application secret and various passwords. Given the potential impact on confidentiality, integrity, and availability, organizations should prioritize patching immediately.
The vulnerability, discovered on August 28, 2021, has been assigned a CVSS score of 8.8, indicating a high-risk level. The attack vector is network-based, with low complexity, and requires low privileges. Organizations are advised to update to version 2.5.1 or later to mitigate this vulnerability.
The issue arises due to a flaw in the handling of configuration entries within the application. Attackers may leverage this vulnerability to gain unauthorized access to sensitive information, posing a significant risk to organizations that utilize the catchet system.
Organizations should address this vulnerability in their priority patch cycle to prevent potential data leaks and maintain the integrity of their systems.
Vulnerability Details
This vulnerability allows authenticated users, regardless of their privileges (User or Admin), to leak the value of any configuration entry of the dotenv file. This includes sensitive information such as the application secret (`APP_KEY`) and various passwords (email, database, etc). The issue was addressed in version 2.5.1 by improving the handling of configuration updates and preventing the use of nested variables in the resulting dotenv configuration file.
The CVSS score for CVE-2021-39174 is 8.8, indicating a high severity. The CVSS vector is as follows: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. This vector suggests that the attack can be initiated over the network, with low complexity and requiring low privileges, leading to high impacts on confidentiality, integrity, and availability.
Technical Analysis
The root cause of this vulnerability stems from improper handling of configuration data within the application. Authenticated users can access sensitive environment variables, leading to potential exposure of critical application secrets. The attack vector is network-based, allowing attackers to exploit this vulnerability remotely.
The attack complexity is low, requiring minimal technical skills to exploit. Additionally, the vulnerability does not require any user interaction, making it particularly dangerous. The impact on confidentiality is significant, as attackers may gain access to sensitive information. Integrity and availability are also at risk due to the potential for unauthorized changes to critical application configurations.
Risk & Impact Analysis
The real-world risk associated with CVE-2021-39174 is substantial, as it exposes organizations to potential data breaches and unauthorized access to sensitive information. The blast radius is broad, affecting any instance of the catchet application that is not updated to version 2.5.1 or later.
Given the high CVSS score and the potential for exploitation, organizations must respond urgently. Failure to address this vulnerability could lead to significant data loss, reputational damage, and compliance issues.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | Yes |
Public PoC | Yes |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
The vulnerability affects all versions of catchet prior to 2.5.1. Organizations using versions earlier than this should update immediately to mitigate the risks associated with this vulnerability.
Mitigation & Remediation
To remediate this vulnerability, organizations are advised to upgrade to catchet version 2.5.1 or later. If immediate upgrading is not possible, a temporary workaround is to restrict access to the administration dashboard to trusted source IP addresses. This can help mitigate the risk of exploitation while a permanent fix is implemented.
For comprehensive security, consider implementing continuous security testing and regular vulnerability assessments to identify potential weaknesses in system configurations.
Detection Guidance
Monitoring logs for unauthorized access attempts to the administration dashboard can help identify potential exploitation attempts. Additionally, organizations should look for behavioral anomalies that may indicate exploitation of this vulnerability.
AppSecure Threat Intelligence Insight
CVE-2021-39174 illustrates a common issue in web applications where sensitive configuration details are improperly managed. The trend of misconfiguration-related vulnerabilities continues to pose significant risks for organizations. Security teams should prioritize secure coding practices and regular audits to prevent similar vulnerabilities in the future.
Organizations can benefit from adopting a robust vulnerability management program, which includes regular patching and thorough security assessments. For further resources on vulnerability management, consider reviewing our guide on vulnerability management programs. This can help in identifying and mitigating vulnerabilities proactively.
Incorporating practices such as continuous penetration testing can provide ongoing insights into potential vulnerabilities, allowing for timely remediation before exploitation occurs.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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