CVE-2021-36389 : Exploit Details and Defense Strategies
Learn about CVE-2021-36389, a security flaw in Yellowfin BI before 9.6.1 allowing attackers to download uploaded images via specially crafted HTTP requests.
Yellowfin before version 9.6.1 is vulnerable to an Insecure Direct Object Reference flaw, allowing attackers to enumerate and download uploaded images via a crafted HTTP GET request to the "MIImage.i4" page.
Understanding CVE-2021-36389
This CVE identifies a security vulnerability in Yellowfin BI software that could lead to unauthorized access to uploaded images.
What is CVE-2021-36389?
The vulnerability in Yellowfin BI before version 9.6.1 enables threat actors to exploit an Insecure Direct Object Reference loophole by manipulating HTTP requests.
The Impact of CVE-2021-36389
This security issue could result in the unauthorized retrieval of sensitive images stored within the Yellowfin BI application, potentially leading to data breaches and privacy violations.
Technical Details of CVE-2021-36389
Yellowfin BI's vulnerability involves an Insecure Direct Object Reference, which could be exploited by sending a specially crafted HTTP GET request to the vulnerable "MIImage.i4" page.
Vulnerability Description
The flaw allows threat actors to enumerate and download uploaded images without proper authorization through the affected page.
Affected Systems and Versions
Yellowfin BI versions prior to 9.6.1 are susceptible to this security vulnerability.
Exploitation Mechanism
By submitting a maliciously crafted HTTP GET request targeting the "MIImage.i4" page, attackers can bypass security controls and access sensitive image files.
Mitigation and Prevention
To mitigate the risks associated with CVE-2021-36389, immediate action and long-term security practices are essential.
Immediate Steps to Take
Organizations using Yellowfin BI should update to version 9.6.1 or newer to address this vulnerability promptly.
Long-Term Security Practices
Implement regular security audits, access controls, and user permissions to prevent unauthorized access to sensitive data.
Patching and Updates
Stay informed about security patches and updates provided by Yellowfin BI to protect against known vulnerabilities.