CVE-2021-29246 Explained : Impact and Mitigation
Learn about CVE-2021-29246, a directory traversal vulnerability in BTCPay Server through 1.0.7.0 that allows code execution by attackers with admin privileges.
BTCPay Server through 1.0.7.0 is impacted by a directory traversal vulnerability that enables an attacker with admin privileges to execute malicious code. Exploiting this flaw requires crafting a plugin file with special characters to bypass directory restrictions.
Understanding CVE-2021-29246
This section delves into the specifics of the CVE-2021-29246 vulnerability.
What is CVE-2021-29246?
CVE-2021-29246 involves a directory traversal issue in BTCPay Server through version 1.0.7.0 that empowers an attacker possessing admin privileges to execute arbitrary code by uploading a malicious plugin outside of the restricted directory.
The Impact of CVE-2021-29246
The exploitation of this vulnerability could result in unauthorized code execution, granting attackers significant control over the BTCPay Server environment.
Technical Details of CVE-2021-29246
Explore the technical aspects associated with CVE-2021-29246 below.
Vulnerability Description
The flaw in BTCPay Server allows an authenticated attacker with admin rights to upload a specially crafted plugin file to achieve code execution outside the intended directory.
Affected Systems and Versions
BTCPay Server versions up to and including 1.0.7.0 are susceptible to this directory traversal vulnerability.
Exploitation Mechanism
To exploit CVE-2021-29246, attackers must create a malicious plugin file containing specific characters to bypass directory constraints and upload the file to a location beyond the intended directory.
Mitigation and Prevention
Discover the necessary steps to mitigate the risks posed by CVE-2021-29246.
Immediate Steps to Take
Immediately updating BTCPay Server to a patched version beyond 1.0.7.0 is crucial to remediate the vulnerability and prevent potential exploitation.
Long-Term Security Practices
Enforcing robust code review processes and implementing secure coding practices can enhance the overall security posture of BTCPay Server.
Patching and Updates
Regularly checking for security updates and promptly applying patches provided by BTCPay Server is essential to ensure ongoing protection against vulnerabilities.