CVE-2021-3148 is a critical command injection vulnerability identified in SaltStack Salt versions prior to 3002.5. This vulnerability allows attackers to send crafted web requests to the Salt API, which can lead to command injection via the salt.utils.thin.gen_thin() function. The issue arises from differing handling of single and double quotes in the code, specifically in the salt/utils/thin.py. This vulnerability can have severe implications for the confidentiality, integrity, and availability of affected systems.
The CVSS 3.1 score for this vulnerability is 9.8, indicating a critical severity level. This high score reflects the ease of exploitation, as no privileges or user interaction are required to execute an attack. Attackers can exploit this vulnerability over the network, making it a significant risk for organizations utilizing affected versions of SaltStack Salt.
Risk to organizations includes unauthorized command execution, which can lead to data breaches, system compromise, and potential service disruptions. Given the critical nature of this vulnerability, organizations should prioritize patching immediately.
As of now, there are no known public exploits or proof of concepts for CVE-2021-3148, but the nature of the vulnerability warrants immediate attention. Organizations are advised to monitor their environments for any signs of exploitation and implement necessary security measures.
Vulnerability Details
An issue was discovered in SaltStack Salt before 3002.5. The vulnerability stems from the handling of quotes in the code, specifically related to the command generation functionality within the Salt API. The vulnerability is classified under CWE-77, which denotes command injection vulnerabilities.
The vulnerability affects various versions of SaltStack Salt, as well as specific versions of Debian and Fedora distributions that utilize this software. The publication date for this vulnerability was February 27, 2021.
Technical Analysis
The root cause of CVE-2021-3148 is found in the way SaltStack Salt processes web requests. The vulnerability allows for command injection due to inadequate input validation when processing quoted strings. This vulnerability can be exploited remotely, with low complexity and no required privileges.
Exploitation of this vulnerability can lead to high impacts on confidentiality, integrity, and availability. If exploited, attackers can execute arbitrary commands on the server running SaltStack Salt, potentially leading to complete system compromise.
Risk & Impact Analysis
The risk associated with CVE-2021-3148 is substantial. Organizations using vulnerable versions of SaltStack Salt may face severe data breaches, unauthorized access, and operational disruptions. The blast radius of this vulnerability extends to any system utilizing the affected software, making it critical for organizations to assess their environment.
Given the CVSS score of 9.8, organizations should address this vulnerability in their priority patch cycle. Immediate remediation is essential to prevent potential exploitation.
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | No |
Ransomware Use | No |
Affected Versions
CVE-2021-3148 affects multiple versions of SaltStack Salt, specifically all versions prior to 3002.5, as well as various versions of Debian and Fedora distributions. If specific version information is missing, organizations should assume that all versions prior to vendor patch remain vulnerable.
Mitigation & Remediation
Organizations must prioritize upgrading to SaltStack Salt version 3002.5 or later to mitigate this vulnerability. In cases where immediate patching is not feasible, organizations should implement strict access controls to the Salt API and monitor for any suspicious activity.
Further, applying configuration hardening measures and establishing network controls to limit access to the Salt API can help reduce exposure to potential attacks. Continuous monitoring for any unusual activity in the logs is also recommended.
For ongoing security assessments and to validate remediation efforts, organizations should consider implementing penetration testing practices.
Detection Guidance
To detect potential exploitation of CVE-2021-3148, organizations should monitor logs for unusual API requests and unexpected command executions. Behavioral anomalies that deviate from normal operational patterns should be investigated promptly.
Establishing network signatures to identify unauthorized access attempts and changes in system configurations can also aid in detection efforts.
AppSecure Threat Intelligence Insight
CVE-2021-3148 demonstrates the critical need for continuous security improvements and proactive vulnerability management. Organizations should regularly review and update their security practices to address emerging threats.
This vulnerability serves as a reminder of the importance of proper input validation and the potential consequences of overlooked code practices. Security teams must prioritize training and awareness to mitigate similar vulnerabilities in the future.
For more insights into vulnerability management, consider exploring our guide on vulnerability management programs and best practices.
Additionally, organizations are encouraged to review our resources on API security testing and the role of regular assessments in maintaining security posture.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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