CVE-2018-20451 Explained : Impact and Mitigation
Learn about CVE-2018-20451, a heap-based buffer over-read vulnerability in the process_file function of reader.c in libdoc until 2017-10-23, allowing attackers to cause a denial of service by crashing the application.
A heap-based buffer over-read vulnerability in the process_file function of reader.c in libdoc until 2017-10-23 could lead to a denial of service attack by crashing the application.
Understanding CVE-2018-20451
This CVE involves a specific vulnerability in the libdoc library that could be exploited by attackers to disrupt the application's functionality.
What is CVE-2018-20451?
The vulnerability identified in CVE-2018-20451 is a heap-based buffer over-read issue in the process_file function of reader.c in libdoc until October 23, 2017. Attackers can leverage this flaw to create a denial of service scenario, causing the application to crash. The exploit relies on a specially crafted file to trigger the vulnerability.
The Impact of CVE-2018-20451
The exploitation of this vulnerability can result in a denial of service, leading to the application crashing and potentially disrupting normal operations.
Technical Details of CVE-2018-20451
This section provides more in-depth technical insights into the vulnerability.
Vulnerability Description
The process_file function in reader.c in libdoc through 2017-10-23 suffers from a heap-based buffer over-read, enabling attackers to induce a denial of service (application crash) through a malicious file.
Affected Systems and Versions
- Product: Not applicable
- Vendor: Not applicable
- Versions: Until 2017-10-23
Exploitation Mechanism
The attack vector involves the utilization of a specially crafted file to trigger the heap-based buffer over-read vulnerability, ultimately causing a denial of service.
Mitigation and Prevention
To address CVE-2018-20451, consider the following mitigation strategies:
Immediate Steps to Take
- Apply security patches or updates provided by the software vendor.
- Implement proper input validation mechanisms to prevent malicious file execution.
Long-Term Security Practices
- Conduct regular security assessments and code reviews to identify and address vulnerabilities.
- Educate developers on secure coding practices to minimize the introduction of such vulnerabilities.
Patching and Updates
- Stay informed about security advisories related to libdoc and apply patches promptly to mitigate known vulnerabilities.