CVE-2018-1000880 : What You Need to Know

A security vulnerability in libarchive version starting from commit 9693801580c0cf7c70e862d305270a16b52826a7 onward has been identified. This vulnerability is categorized as CWE-20, leading to a Denial of Service (DoS) situation.

Understanding CVE-2018-1000880

This CVE involves a vulnerability in the WARC parser component of libarchive, potentially resulting in a DoS situation.

What is CVE-2018-1000880?

CVE-2018-1000880 is a security vulnerability in libarchive version starting from commit 9693801580c0cf7c70e862d305270a16b52826a7 onward. The vulnerability is related to improper input validation in the WARC parser component.

The Impact of CVE-2018-1000880

Exploiting this vulnerability can lead to a Denial of Service (DoS) situation, causing quasi-infinite execution time and excessive disk usage on the affected system due to a small-sized file.

Technical Details of CVE-2018-1000880

This section provides more technical insights into the vulnerability.

Vulnerability Description

The vulnerability occurs in the WARC parser component located at libarchive/archive_read_support_format_warc.c, specifically within the _warc_read() function. It is categorized as CWE-20, indicating Improper Input Validation.

Affected Systems and Versions

Product: N/A
Vendor: N/A
Versions: Affected starting from commit 9693801580c0cf7c70e862d305270a16b52826a7 onward

Exploitation Mechanism

Exploiting this vulnerability requires the victim to open a WARC file that has been deliberately crafted with malicious intentions.

Mitigation and Prevention

Protecting systems from CVE-2018-1000880 requires immediate actions and long-term security practices.

Immediate Steps to Take

Apply relevant patches and updates promptly.
Avoid opening WARC files from untrusted or unknown sources.
Monitor system resources for any unusual behavior that might indicate a DoS attack.

Long-Term Security Practices

Regularly update and patch software to address known vulnerabilities.
Implement network and file scanning for malicious content.
Educate users on safe browsing habits and file handling practices.

Patching and Updates

Ensure that the affected systems are updated with the latest patches provided by the software vendor.