CVE-2018-10877 : Vulnerability Insights and Analysis

The ext4 filesystem in the Linux kernel is susceptible to an out-of-bounds access issue within the ext4_ext_drop_refs() function, leading to a high severity vulnerability.

Understanding CVE-2018-10877

This CVE entry details a specific vulnerability in the Linux kernel's ext4 filesystem that can be exploited locally.

What is CVE-2018-10877?

The vulnerability arises from mishandling manipulated ext4 filesystem images, resulting in an out-of-bounds access issue.

The Impact of CVE-2018-10877

The vulnerability has a high severity rating with significant impacts on confidentiality, integrity, and availability of affected systems.

Technical Details of CVE-2018-10877

This section provides more in-depth technical insights into the CVE-2018-10877 vulnerability.

Vulnerability Description

The issue occurs within the ext4_ext_drop_refs() function of the Linux kernel, triggered by specially crafted ext4 filesystem images.

Affected Systems and Versions

Product: Kernel
Vendor: [UNKNOWN]
Versions: Not applicable (n/a)

Exploitation Mechanism

Attack Complexity: Low
Attack Vector: Local
Privileges Required: Low
User Interaction: Required
Scope: Unchanged
Confidentiality Impact: High
Integrity Impact: High
Availability Impact: High

Mitigation and Prevention

Protecting systems from CVE-2018-10877 requires immediate actions and long-term security practices.

Immediate Steps to Take

Apply relevant patches and updates promptly.
Monitor vendor advisories for mitigation guidance.
Restrict access to vulnerable systems.

Long-Term Security Practices

Regularly update and patch systems to prevent known vulnerabilities.
Implement least privilege access controls to limit potential damage.
Conduct security assessments and audits periodically.

Patching and Updates

Refer to vendor advisories for specific patch information and update procedures.