CVE-2022-27620 : What You Need to Know

A Path Traversal vulnerability in the webapi component of Synology SSO Server before version 2.2.3-0331 allows remote authenticated users to read arbitrary files, posing a risk to confidentiality.

Understanding CVE-2022-27620

This CVE involves an improper limitation of a pathname to a restricted directory, enabling unauthorized access to sensitive files.

What is CVE-2022-27620?

The CVE-2022-27620 vulnerability in Synology SSO Server permits authenticated remote users to traverse directories and view unauthorized files, potentially leading to data exposure.

The Impact of CVE-2022-27620

With a CVSS base score of 6.8, this medium-severity vulnerability can result in the compromise of highly confidential information due to inadequate path restrictions, affecting the integrity of the system.

Technical Details of CVE-2022-27620

This section delves into the specifics of the vulnerability, outlining the affected systems, versions, and the exploitation method.

Vulnerability Description

The vulnerability arises from the improper handling of file paths in the webapi component, allowing authenticated users to escape the restricted directory and access arbitrary files.

Affected Systems and Versions

Synology SSO Server versions prior to 2.2.3-0331 are impacted by this vulnerability, exposing them to the risk of unauthorized file access by authenticated remote users.

Exploitation Mechanism

Remote authenticated attackers can exploit this vulnerability by manipulating file paths to access sensitive files outside of the intended directory, potentially extracting confidential data.

Mitigation and Prevention

Addressing and mitigating CVE-2022-27620 is crucial to safeguard systems against potential exploitation and data breaches.

Immediate Steps to Take

Users are advised to update Synology SSO Server to version 2.2.3-0331 or later to mitigate the vulnerability and prevent unauthorized file access.

Long-Term Security Practices

Implementing access controls, restricted file permissions, and regular security assessments can enhance the overall security posture and prevent similar vulnerabilities in the future.

Patching and Updates

Regularly applying security patches and updates to the Synology SSO Server is essential to address known vulnerabilities and bolster system security.