CVE-2018-16846 Explained : Impact and Mitigation

In Ceph versions prior to 13.2.4, a vulnerability allows authenticated users of ceph RGW to disrupt OMAPs storing bucket indices, leading to a denial of service.

Understanding CVE-2018-16846

This CVE involves a vulnerability in Ceph versions before 13.2.4 that can be exploited by authenticated users to cause a denial of service.

What is CVE-2018-16846?

CVE-2018-16846 is a security vulnerability in Ceph versions prior to 13.2.4 that enables authenticated users to disrupt OMAPs storing bucket indices, resulting in a denial of service.

The Impact of CVE-2018-16846

The vulnerability poses a medium severity risk with a CVSS base score of 6.5. Authenticated users can exploit this issue to cause a denial of service, impacting the availability of the system.

Technical Details of CVE-2018-16846

This section provides more in-depth technical information about the CVE.

Vulnerability Description

The vulnerability in Ceph versions before 13.2.4 allows authenticated ceph RGW users to disrupt OMAPs holding bucket indices, leading to a denial of service.

Affected Systems and Versions

Product: Ceph
Vendor: [UNKNOWN]
Versions Affected: 13.2.4

Exploitation Mechanism

Attack Complexity: Low
Attack Vector: Network
Privileges Required: Low
User Interaction: None
Scope: Unchanged
Availability Impact: High
Confidentiality Impact: None
Integrity Impact: None

Mitigation and Prevention

Protect your systems from CVE-2018-16846 with these mitigation strategies.

Immediate Steps to Take

Update Ceph to version 13.2.4 or later to mitigate the vulnerability.
Monitor and restrict access to ceph RGW to prevent unauthorized exploitation.

Long-Term Security Practices

Regularly update and patch Ceph to address security vulnerabilities.
Implement strong authentication mechanisms to control access to ceph RGW.

Patching and Updates

Apply security updates provided by Ceph to patch the vulnerability and enhance system security.