CVE-2018-17436 Explained : Impact and Mitigation
Learn about CVE-2018-17436, a denial of service vulnerability in the HDF HDF5 library up to version 1.10.3. Find out how attackers exploit this flaw during GIF to HDF file conversion and steps to prevent it.
CVE-2018-17436 was published on September 24, 2018, by MITRE. The vulnerability affects the HDF HDF5 library up to version 1.10.3, allowing attackers to launch a denial of service attack through unauthorized write access when converting a GIF file to an HDF file.
Understanding CVE-2018-17436
This section provides insights into the nature and impact of CVE-2018-17436.
What is CVE-2018-17436?
The vulnerability lies in the ReadCode() function within decompress.c in the HDF HDF5 library. Attackers can exploit this flaw to trigger a denial of service attack by gaining unauthorized write access during the conversion of a GIF file to an HDF file.
The Impact of CVE-2018-17436
The vulnerability can lead to a denial of service attack, potentially disrupting the functionality of systems utilizing the affected HDF HDF5 library.
Technical Details of CVE-2018-17436
This section delves into the technical aspects of CVE-2018-17436.
Vulnerability Description
The vulnerability in ReadCode() within decompress.c in the HDF HDF5 library allows attackers to cause a denial of service through invalid write access when processing HDF5 files converted from GIF files.
Affected Systems and Versions
- Affected Versions: Up to HDF HDF5 version 1.10.3
- Affected Products and Vendors: Not applicable
Exploitation Mechanism
The vulnerability can be exploited by attackers manipulating crafted HDF5 files during the conversion process from GIF files.
Mitigation and Prevention
To address CVE-2018-17436, users and organizations can take the following steps:
Immediate Steps to Take
- Implement access controls to restrict unauthorized write access
- Regularly monitor and analyze file conversion processes for suspicious activities
Long-Term Security Practices
- Conduct regular security assessments and audits of the HDF HDF5 library
- Stay informed about security updates and patches released by the library maintainers
Patching and Updates
- Apply patches and updates provided by the HDF HDF5 library to mitigate the vulnerability and enhance system security