CVE-2021-32518 : Security Advisory and Response
Discover the details of CVE-2021-32518, a critical security flaw in QSAN Storage Manager allowing attackers to access unauthorized files. Learn about the impact, affected versions, and mitigation steps.
A critical vulnerability was discovered in QSAN Storage Manager, identified as CVE-2021-32518, allowing remote attackers to exploit UNIX symbolic link following to access unauthorized files. This CVE was made public on July 7, 2021, by TWCERT/CC.
Understanding CVE-2021-32518
This section delves into the details of the CVE-2021-32518 vulnerability affecting QSAN Storage Manager.
What is CVE-2021-32518?
The CVE-2021-32518 is a security flaw found in the QSAN Storage Manager that enables malicious actors to create symbolic links, leading to unauthorized file access.
The Impact of CVE-2021-32518
With a high CVSS base score of 7.5 and a severity rating of HIGH, this vulnerability poses a significant risk to confidentiality by allowing attackers to retrieve sensitive information without proper authorization.
Technical Details of CVE-2021-32518
Let's dive into the technical aspects of the CVE-2021-32518 vulnerability.
Vulnerability Description
The vulnerability in the share_link feature of QSAN Storage Manager permits attackers to establish symbolic links and subsequently retrieve arbitrary files.
Affected Systems and Versions
QSAN Storage Manager versions up to and including 3.3.1 are susceptible to this security loophole.
Exploitation Mechanism
The attack complexity is rated as LOW, and the attack vector is through a NETWORK, with no user interaction or privileges required.
Mitigation and Prevention
To safeguard your systems from CVE-2021-32518, consider the following mitigations and preventive measures.
Immediate Steps to Take
Update QSAN Storage Manager to the patched version 3.3.3 to eliminate the vulnerability and prevent unauthorized access to files.
Long-Term Security Practices
Implement strict file access controls, conduct regular security audits, and educate users on safe file-sharing practices to enhance overall system security.
Patching and Updates
Regularly monitor for security updates from QSAN and promptly apply patches to ensure the latest vulnerability fixes are in place.