CVE-2021-29088 : Security Advisory and Response
Learn about CVE-2021-29088, a Path Traversal vulnerability in Synology DiskStation Manager (DSM) before 6.2.4-25553, allowing local users to execute arbitrary code. Understand the impact, technical details, and mitigation steps.
A Path Traversal vulnerability was discovered in the cgi component of Synology DiskStation Manager (DSM) before version 6.2.4-25553. This vulnerability could allow local users to execute arbitrary code, leading to a high impact on confidentiality, integrity, and availability of the affected systems.
Understanding CVE-2021-29088
This CVE refers to an improper limitation of a pathname to a restricted directory, allowing attackers to traverse directories and execute unauthorized code.
What is CVE-2021-29088?
The CVE-2021-29088 vulnerability, with a CVSS base score of 7.8 (High severity), occurs due to inadequate restrictions on directory paths in Synology DiskStation Manager (DSM) versions prior to 6.2.4-25553.
The Impact of CVE-2021-29088
The impact of CVE-2021-29088 is severe, with attackers being able to exploit this vulnerability to execute malicious code on affected systems. The confidentiality, integrity, and availability of the systems are at high risk.
Technical Details of CVE-2021-29088
This section covers the technical aspects of the vulnerability.
Vulnerability Description
The vulnerability arises from the improper limitation of directory paths, known as Path Traversal, which enables local users to run unauthorized code on the system.
Affected Systems and Versions
The affected product is Synology DiskStation Manager (DSM) by Synology. Versions prior to 6.2.4-25553 are impacted by this vulnerability.
Exploitation Mechanism
Attackers can exploit this vulnerability by manipulating directory paths, allowing them to traverse directories and execute arbitrary code.
Mitigation and Prevention
To safeguard your systems from CVE-2021-29088, follow the recommended security measures.
Immediate Steps to Take
Users are advised to update Synology DiskStation Manager (DSM) to version 6.2.4-25553 or later to mitigate the risk of exploitation.
Long-Term Security Practices
It is crucial to regularly update software and implement security best practices to prevent similar vulnerabilities in the future.
Patching and Updates
Stay informed about security advisories and apply patches promptly to address known vulnerabilities.