CVE-2021-22571 Explained : Impact and Mitigation
Learn about CVE-2021-22571, an information leak vulnerability in Google's sa360-webquery-bigquery, allowing local attackers to access sensitive data in the /tmp folder. Upgrade to version 1.0.3 or above to mitigate the risk.
This article provides detailed information on CVE-2021-22571, an Information Leak vulnerability in Google's sa360-webquery-bigquery. It includes the impact, technical details, and mitigation steps.
Understanding CVE-2021-22571
CVE-2021-22571 is an information leak vulnerability in the Google SA360 WebQuery to BigQuery tool. It allows a local attacker to read files from other users' SA360 reports stored in the /tmp folder before they are loaded into BigQuery.
What is CVE-2021-22571?
The vulnerability in the /tmp folder staging process enables a potential attacker to access sensitive data from other users' reports. Upgrading to version 1.0.3 or above is strongly recommended to mitigate this issue.
The Impact of CVE-2021-22571
With a CVSS base score of 5.5, CVE-2021-22571 is rated as a medium severity vulnerability. It poses a high confidentiality impact as it allows unauthorized access to sensitive data stored in the /tmp folder.
Technical Details of CVE-2021-22571
The technical details of CVE-2021-22571 include the vulnerability description, affected systems and versions, and exploitation mechanism.
Vulnerability Description
The vulnerability allows a local attacker to read files from other users' SA360 reports in the /tmp folder during the staging process before they are loaded in BigQuery.
Affected Systems and Versions
The affected product is 'google/sa360-webquery-bigquery,' with versions less than or equal to 1.0.2 being vulnerable. Custom versions are also impacted.
Exploitation Mechanism
The attacker needs local access to exploit this vulnerability, enabling them to read sensitive files during the staging process.
Mitigation and Prevention
Mitigation steps focus on immediate actions and long-term security practices to prevent exploitation and the importance of patching and updates.
Immediate Steps to Take
Upgrade to version 1.0.3 or above to mitigate the information leak vulnerability. Ensure access controls are in place to restrict unauthorized file access.
Long-Term Security Practices
Implement stringent file permissions, regular security assessments, and continuous monitoring to detect and prevent unauthorized access to sensitive data.
Patching and Updates
Regularly apply security patches and updates to keep software and systems secure against known vulnerabilities.