CVE-2019-6129 : Exploit Details and Defense Strategies
Learn about CVE-2019-6129, a memory leak vulnerability in libpng 1.6.36 with disputed responsibility for freeing the buffer. Understand the impact, technical details, and mitigation steps.
CVE-2019-6129 was published on January 11, 2019, and affects libpng 1.6.36 due to a memory leak issue in the png_create_info_struct function. The vulnerability has been disputed regarding the responsibility of freeing the buffer.
Understanding CVE-2019-6129
This CVE entry highlights a memory leak vulnerability in libpng 1.6.36, specifically in the png_create_info_struct function, which has been demonstrated by pngcp. The responsibility of freeing the buffer has been a subject of dispute.
What is CVE-2019-6129?
The CVE-2019-6129 vulnerability involves a memory leak issue in libpng 1.6.36, particularly in the png_create_info_struct function. A third party has expressed concerns about the responsibility of freeing the buffer in libpng.
The Impact of CVE-2019-6129
The vulnerability could potentially lead to memory exhaustion or denial of service if exploited. It may also pose a risk of unauthorized access or manipulation of data.
Technical Details of CVE-2019-6129
CVE-2019-6129 involves a specific vulnerability in libpng 1.6.36 with the following technical details:
Vulnerability Description
The vulnerability resides in the png_create_info_struct function of libpng 1.6.36, leading to a memory leak issue.
Affected Systems and Versions
- Product: Not applicable
- Vendor: Not applicable
- Version: Not applicable
Exploitation Mechanism
The vulnerability can be exploited by using the pngcp tool to demonstrate the memory leak issue in libpng 1.6.36.
Mitigation and Prevention
To address CVE-2019-6129, consider the following mitigation strategies:
Immediate Steps to Take
- Monitor for any unusual memory consumption patterns.
- Implement code changes to address the memory leak in the png_create_info_struct function.
Long-Term Security Practices
- Regularly update libpng to the latest version to patch known vulnerabilities.
- Conduct security audits to identify and address potential memory leaks in the codebase.
Patching and Updates
- Apply patches provided by libpng to fix the memory leak issue in the png_create_info_struct function.