CVE-2020-10199 is a high-severity vulnerability affecting Sonatype Nexus Repository versions prior to 3.21.2. This vulnerability allows JavaEL Injection, which could lead to remote code execution. The CVSS score for this vulnerability is 8.8, indicating a significant risk to organizations utilizing affected versions of the Nexus Repository. The attack vector is network-based, and it requires low privileges and no user interaction, making it particularly dangerous.
Risk to organizations includes unauthorized access to sensitive data, system integrity compromise, and potential service disruptions. Given the ease of exploitation and the potential for severe consequences, organizations should prioritize patching immediately. The vulnerability was published on April 1, 2020, and has been recognized in the Known Exploited Vulnerabilities (KEV) catalog since November 3, 2021.
With an EPSS score in the 99.9th percentile, there is a high probability that this vulnerability will be exploited in the wild. Organizations are advised to take immediate action to ensure that their Nexus Repository installations are updated to version 3.21.2 or later.
Given the critical nature of this vulnerability, timely remediation is essential for maintaining the security posture of affected systems.
Vulnerability Details
The vulnerability has been classified as a JavaEL Injection issue, allowing attackers to execute arbitrary code on the server. The CVE-2020-10199 has a CVSS score of 8.8, indicating a high severity level. The affected product is Sonatype Nexus Repository, specifically versions before 3.21.2. The vulnerability was disclosed on April 1, 2020, and falls under the CWE-917 classification.
Technical Analysis
The root cause of CVE-2020-10199 stems from improper neutralization of special elements used in an expression language statement. The attack vector is network-based, which means it can be exploited remotely, and the complexity of the attack is low. Attackers require low privileges to exploit this vulnerability, and there is no need for user interaction, which significantly increases the risk.
The impact on confidentiality, integrity, and availability is high, as successful exploitation could lead to unauthorized access and control over the affected system. Organizations using vulnerable versions of Nexus Repository are at risk of data breaches and service disruptions.
Risk & Impact Analysis
Organizations deploying Sonatype Nexus Repository should be aware of the real-world risks associated with CVE-2020-10199. The potential for exploitation can have far-reaching consequences, including unauthorized access to sensitive information, integrity compromise, and service outages. Given that this vulnerability has been added to the KEV catalog, it indicates active interest from malicious actors.
Organizations should assess their exposure and prioritize remediation efforts based on the CVSS score and the critical nature of the vulnerability. Immediate action is necessary to mitigate risks and protect organizational assets from potential threats.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | Yes |
Public PoC | Yes |
Actively Exploited | Yes |
Ransomware Use | No |
Affected Versions
All versions of Sonatype Nexus Repository prior to 3.21.2 are affected by this vulnerability. Organizations must ensure they are running the latest version to mitigate the risk associated with this vulnerability.
Mitigation & Remediation
Organizations should apply the latest patches provided by Sonatype to remediate this vulnerability. For Nexus Repository, upgrade to version 3.21.2 or later. In cases where immediate patching is not possible, organizations should implement network controls to restrict access to the Nexus Repository and monitor for any anomalous behavior.
For ongoing protection, organizations may consider engaging in penetration testing to validate the effectiveness of security measures.
Detection Guidance
To detect potential exploitation of this vulnerability, organizations should monitor logs for unusual requests or code execution attempts. Behavioral anomalies associated with unauthorized access should be flagged for immediate investigation, and any changes to the application environment should be closely monitored.
AppSecure Threat Intelligence Insight
The long-term significance of CVE-2020-10199 lies in the increasing prevalence of JavaEL Injection vulnerabilities in web applications. This incident highlights the need for developers to adopt secure coding practices to prevent similar vulnerabilities in future releases.
Security teams should learn from this vulnerability to improve their defensive strategies. By regularly updating software and conducting thorough security assessments, organizations can mitigate the risks associated with vulnerabilities like CVE-2020-10199.
For further reading on best practices in vulnerability management, consider reviewing the vulnerability management program to strengthen your security posture.
In addition, understanding the impact of vulnerabilities can aid in prioritization of remediation efforts. For insights on penetration testing methodologies, refer to the penetration testing methodology for effective security assessments.
Finally, reviewing the latest trends in vulnerability exposure can help organizations stay informed about the evolving threat landscape. Check the latest trends in vulnerability exposure in the 2025 vulnerability exposure severity trends report.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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