CVE-2017-15887 : Vulnerability Insights and Analysis

Synology CardDAV Server before version 6.0.7-0085 is vulnerable to an improper restriction of excessive authentication attempts, allowing remote attackers to obtain user credentials through brute-force attacks.

Understanding CVE-2017-15887

This CVE identifies a security vulnerability in Synology CardDAV Server that can be exploited by attackers to retrieve user credentials.

What is CVE-2017-15887?

The vulnerability in the /principals path of Synology CardDAV Server before version 6.0.7-0085 enables remote attackers to conduct brute-force attacks to acquire user credentials due to an inadequate restriction on authentication attempts.

The Impact of CVE-2017-15887

The vulnerability poses a risk of unauthorized access to user credentials, potentially leading to data breaches and compromised user accounts.

Technical Details of CVE-2017-15887

This section provides detailed technical information about the vulnerability.

Vulnerability Description

The vulnerability in Synology CardDAV Server before version 6.0.7-0085 allows remote attackers to obtain user credentials through brute-force attacks by exploiting the improper restriction on authentication attempts.

Affected Systems and Versions

Product: Synology CardDAV Server
Vendor: Synology
Versions Affected: Before 6.0.7-0085

Exploitation Mechanism

Attackers can exploit the vulnerability by targeting the /principals path of the CardDAV Server, initiating brute-force attacks to retrieve user credentials.

Mitigation and Prevention

To address CVE-2017-15887, follow these mitigation steps:

Immediate Steps to Take

Update Synology CardDAV Server to version 6.0.7-0085 or later.
Implement strong password policies to mitigate brute-force attacks.

Long-Term Security Practices

Regularly monitor and audit authentication attempts on the server.
Educate users on secure password practices and the risks of credential exposure.

Patching and Updates

Apply security patches and updates provided by Synology to address the vulnerability and enhance system security.