CVE-2021-33178 : Security Advisory and Response
Discover the impact of CVE-2021-33178, a path traversal flaw in NagVis <1.9.29 allowing deletion of files. Learn how to mitigate and prevent unauthorized access.
NagVis versions prior to 1.9.29 are vulnerable to an authenticated path traversal flaw, allowing attackers to delete files on the system.
Understanding CVE-2021-33178
This CVE describes a path traversal vulnerability in NagVis versions below 1.9.29, enabling authenticated actors to delete files on the system.
What is CVE-2021-33178?
The Manage Backgrounds feature in NagVis versions before 1.9.29 is susceptible to an authenticated path traversal flaw. This security issue empowers attackers to delete files on the system.
The Impact of CVE-2021-33178
The exploitation of this vulnerability permits malicious actors to delete files on the local system, potentially leading to data loss or service disruption.
Technical Details of CVE-2021-33178
The following technical aspects are associated with CVE-2021-33178:
Vulnerability Description
NagVis versions earlier than 1.9.29 contain an authenticated path traversal vulnerability in the Manage Backgrounds functionality, enabling unauthorized file deletions.
Affected Systems and Versions
Systems running NagVis versions below 1.9.29 are impacted by this vulnerability and are at risk of file deletion by attackers.
Exploitation Mechanism
The flaw allows authenticated users to traverse directories improperly and delete files on the local system, posing a threat to the integrity of data.
Mitigation and Prevention
Protect your systems from CVE-2021-33178 with the following measures:
Immediate Steps to Take
- Upgrade NagVis to version 1.9.29 or newer to mitigate the vulnerability and prevent unauthorized file deletions.
Long-Term Security Practices
- Regularly monitor security advisories and updates for NagVis to stay informed about potential vulnerabilities.
- Implement least privilege access controls to restrict user permissions and reduce the risk of unauthorized actions.
Patching and Updates
- Ensure timely installation of security patches and updates provided by NagVis to address known vulnerabilities and enhance system security.