CVE-2017-5867 : Vulnerability Insights and Analysis

This CVE involves a vulnerability in ownCloud Server versions prior to 8.1.11, between 8.2.x and 8.2.9, between 9.0.x and 9.0.7, and between 9.1.x and 9.1.3. Authenticated remote users can exploit this vulnerability to cause a denial of service, resulting in server hang and log file flooding.

Understanding CVE-2017-5867

This CVE was published on March 3, 2017, by MITRE.

What is CVE-2017-5867?

ownCloud Server versions before specified releases are susceptible to a denial of service attack by authenticated remote users.

The Impact of CVE-2017-5867

The exploitation of this vulnerability can lead to a server hang and flooding of log files, affecting system availability and performance.

Technical Details of CVE-2017-5867

This section provides detailed technical insights into the vulnerability.

Vulnerability Description

The vulnerability allows authenticated remote users to trigger a denial of service by exploiting a one bit BMP file.

Affected Systems and Versions

ownCloud Server versions prior to 8.1.11
ownCloud Server versions between 8.2.x and 8.2.9
ownCloud Server versions between 9.0.x and 9.0.7
ownCloud Server versions between 9.1.x and 9.1.3

Exploitation Mechanism

The vulnerability can be exploited by authenticated remote users using a one bit BMP file to cause a denial of service, resulting in a server hang and log file flooding.

Mitigation and Prevention

Protecting systems from CVE-2017-5867 requires immediate actions and long-term security practices.

Immediate Steps to Take

Update ownCloud Server to versions 8.1.11, 8.2.9, 9.0.7, or 9.1.3 to mitigate the vulnerability.
Monitor log files for unusual activities that may indicate exploitation.

Long-Term Security Practices

Regularly update and patch ownCloud Server to address security vulnerabilities.
Implement access controls to limit the impact of authenticated users on system resources.

Patching and Updates

Ensure timely installation of security patches and updates for ownCloud Server to prevent exploitation of known vulnerabilities.