On September 13, 2022, a critical vulnerability (CVE-2022-39206) was disclosed affecting OneDev, an open-source, self-hosted Git server with CI/CD capabilities. This vulnerability allows regular (non-admin) users to potentially take over the build infrastructure of a OneDev instance due to improper management of Docker socket permissions. When Docker-based job executors are used, the Docker socket is mounted into each Docker step, enabling users who can define and trigger CI/CD jobs to control the Docker daemon on the host machine.
The severity of this vulnerability is classified as critical, with a CVSS score of 9.9, indicating a high risk to organizations using OneDev. This vulnerability could lead to unauthorized access and manipulation of the build process, allowing attackers to inject malicious code into Docker images that are built and subsequently pushed to Docker Hub.
Exploitation of this vulnerability requires that attackers have an account on the OneDev instance and sufficient permissions to create projects. Given that code.onedev.io has the necessary conditions for exploitation, it is imperative that organizations using this platform prioritize remediation to prevent potential breaches.
Organizations should prioritize patching immediately. Users are advised to upgrade to version 7.3.0 or higher. There are no known workarounds for this issue, emphasizing the critical need for immediate updates.
Vulnerability Details
The vulnerability allows non-admin users to exploit the Docker socket, which can be exploited to achieve privilege escalation. The CVSS 3.1 score indicates a network attack vector, low attack complexity, and low privileges required, making it easier for attackers to exploit. The vulnerability is classified under CWE-610, indicating improper access control.
Technical Analysis
The root cause of this vulnerability lies in the improper handling of Docker socket permissions within the OneDev CI/CD environment. By mounting the Docker socket directly, non-admin users can execute commands on the host system, potentially gaining root access. The attack vector is network-based, with low attack complexity, requiring low privileges, and no user interaction. The impact on confidentiality, integrity, and availability is rated as high.
Risk & Impact Analysis
The exploitation of this vulnerability poses a significant risk to organizations using OneDev. If an attacker successfully exploits this vulnerability, they could hijack builds, inject malicious software, and effectively take control of the build infrastructure. This could lead to widespread malware distribution and significant operational disruptions. Given the critical CVSS score and the potential for exploitation, organizations must assess their exposure and prioritize remediation efforts.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
The vulnerability affects all versions of OneDev prior to version 7.3.0. Organizations using older versions should upgrade immediately to mitigate the risk associated with this vulnerability.
Mitigation & Remediation
To mitigate this vulnerability, organizations should implement the following actions:
1. Upgrade to OneDev version 7.3.0 or higher.
2. Review and restrict permissions for users who can define and trigger CI/CD jobs.
3. Monitor Docker socket access and implement security controls.
For more in-depth security assessments, consider utilizing application security assessments to evaluate potential vulnerabilities in your environment.
Detection Guidance
To detect potential exploitation of this vulnerability, organizations should monitor for the following indicators:
1. Unusual Docker activity or unauthorized access to Docker socket.
2. Changes to CI/CD job configurations that do not align with standard operating procedures.
AppSecure Threat Intelligence Insight
This vulnerability highlights the importance of secure configuration practices when using containerized environments. As organizations increasingly adopt CI/CD pipelines, the risks associated with misconfigured access controls must be addressed proactively.
Security teams are encouraged to stay informed about vulnerabilities affecting their technology stacks and implement continuous monitoring strategies. For further insights on securing CI/CD processes, refer to the following articles:
Continuous security testing in SaaS environments and penetration testing methodology to enhance your security posture.
By remaining vigilant and responsive to vulnerabilities like CVE-2022-39206, organizations can better protect themselves against potential threats.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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