CVE-2021-23732 is a critical vulnerability affecting all versions of the docker-cli-js package. This vulnerability allows attackers to execute arbitrary operating system commands on the host system if the command parameter of the Docker.command method can be partially controlled by a user. With a CVSS base score of 9, this vulnerability poses a serious risk to organizations utilizing this package, particularly in environments where user input can influence command execution.
The severity of this vulnerability is classified as critical due to its potential for exploitation. Attackers may leverage this vulnerability to gain unauthorized access and execute malicious commands, which could lead to data breaches, system compromise, or further exploitation of network resources. Organizations using the docker-cli-js package should prioritize remediation efforts to mitigate these risks.
Currently, there are no known public exploits or proofs of concept available for this vulnerability. However, the nature of the vulnerability, combined with its critical severity rating, suggests that it could be actively exploited if not addressed promptly. Organizations are urged to take immediate action to patch or update their systems.
Organizations should prioritize patching immediately to protect against potential exploitation of CVE-2021-23732. The risk to organizations includes unauthorized command execution and the associated implications on system integrity and confidentiality.
Vulnerability Details
The official description of CVE-2021-23732 states: "This affects all versions of package docker-cli-js. If the command parameter of the Docker.command method can at least be partially controlled by a user, they will be in a position to execute any arbitrary OS commands on the host system." The CVSS score for this vulnerability is 9, indicating critical severity.
The vulnerability is categorized under CWE-78 (Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')). The attack vector for this vulnerability is network-based, and it requires no privileges or user interaction for successful exploitation.
Published on November 22, 2021, this vulnerability affects all versions of the docker-cli-js package. The scope of the attack is considered changed, with high impacts on confidentiality, integrity, and availability.
Technical Analysis
The root cause of CVE-2021-23732 stems from inadequate input validation within the docker-cli-js package. When user inputs can affect the command parameter of the Docker.command method, it creates a pathway for attackers to execute arbitrary commands. The attack vector is network-based, and the complexity of the attack is classified as high, requiring specific conditions to be met for successful exploitation.
No privileges are required to exploit this vulnerability, and user interaction is not necessary, which significantly increases the risk of exploitation. The impacts on confidentiality, integrity, and availability are all rated as high, highlighting the potential severity of the repercussions should an attack occur.
Risk & Impact Analysis
The risk associated with CVE-2021-23732 is particularly concerning for organizations utilizing the docker-cli-js package in production environments. Given the vulnerability's potential for arbitrary command execution, attackers could leverage it to gain control over affected systems, leading to significant operational disruptions.
Organizations should assess their exposure to this vulnerability, particularly those with user input capabilities integrated into their Docker command execution. The blast radius of this vulnerability could extend widely, affecting not only the immediate host but potentially other connected systems and services.
Given the CVSS score of 9 and the potential impacts highlighted, organizations should address this vulnerability in their priority patch cycle. The urgency of remediation is critical, as failure to patch may result in severe consequences, including data loss and unauthorized access.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
All versions of the docker-cli-js package are affected by this vulnerability. Organizations should ensure they are running the latest patched version to mitigate the risk.
Mitigation & Remediation
Organizations should prioritize patching their systems by updating the docker-cli-js package to the latest version where this vulnerability has been addressed. In case an update is unfeasible, implementing strict input validation to sanitize user inputs can help mitigate the risk of exploitation.
For further security assessment, organizations can utilize application security assessments to identify similar weaknesses in their systems.
Detection Guidance
Organizations should monitor their logs for unusual command executions or any attempts to manipulate the Docker command parameters. Behavioral anomalies in user interactions with Docker environments may also indicate attempts to exploit this vulnerability.
AppSecure Threat Intelligence Insight
The long-term significance of CVE-2021-23732 lies in its illustration of the risks associated with inadequate input validation in widely-used software components. Security teams should take this as a reminder to regularly audit their dependencies for vulnerabilities.
This vulnerability represents a pattern seen in various applications where user input can lead to severe security flaws. Continuous monitoring and updating of software dependencies are crucial in maintaining a strong security posture.
Organizations should consider enhancing their security measures by engaging in red teaming exercises to proactively identify and mitigate vulnerabilities within their systems.
Additionally, leveraging penetration testing services can provide in-depth insights into the security landscape and help organizations prepare for 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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