CVE-2019-8904 : Exploit Details and Defense Strategies

CVE-2019-8904 was published on February 18, 2019, and involves a stack-based buffer over-read in the do_bid_note function of readelf.c within libmagic.a in file 5.35. This vulnerability is associated with the usage of file_printf and file_vprintf.

Understanding CVE-2019-8904

This CVE entry describes a specific vulnerability in the file 5.35 library that can lead to a stack-based buffer over-read.

What is CVE-2019-8904?

The vulnerability in CVE-2019-8904 is a stack-based buffer over-read in the do_bid_note function of readelf.c within libmagic.a in file 5.35. It is triggered by the use of file_printf and file_vprintf.

The Impact of CVE-2019-8904

The vulnerability could potentially allow an attacker to read sensitive information from the affected system's memory, leading to a compromise of data integrity and confidentiality.

Technical Details of CVE-2019-8904

CVE-2019-8904 involves the following technical aspects:

Vulnerability Description

The vulnerability is a stack-based buffer over-read in the do_bid_note function of readelf.c within libmagic.a in file 5.35, related to the functions file_printf and file_vprintf.

Affected Systems and Versions

Product: Not applicable
Vendor: Not applicable
Versions: All versions of file 5.35 are affected.

Exploitation Mechanism

The vulnerability can be exploited by an attacker to trigger the stack-based buffer over-read by manipulating the file_printf and file_vprintf functions.

Mitigation and Prevention

It is crucial to take immediate steps to mitigate the risks associated with CVE-2019-8904:

Immediate Steps to Take

Apply security patches provided by the software vendor.
Monitor for any unusual activities on the system that could indicate exploitation of the vulnerability.

Long-Term Security Practices

Regularly update and patch software to address known vulnerabilities.
Implement network segmentation and access controls to limit the impact of potential attacks.

Patching and Updates

Stay informed about security advisories from the software vendor.
Apply patches and updates promptly to ensure the system is protected against known vulnerabilities.