CVE-2017-18235 : What You Need to Know
Discover the impact of CVE-2017-18235 found in Exempi versions 2.4.3 and earlier. Learn about the denial of service risk and how to mitigate this vulnerability.
Exempi version 2.4.3 and earlier versions contain a vulnerability in the VPXChunk class within the WEBP_Support.cpp file, allowing for a denial of service attack.
Understanding CVE-2017-18235
Exempi software versions prior to 2.4.3 are susceptible to a security flaw that could be exploited by malicious actors.
What is CVE-2017-18235?
CVE-2017-18235 is a vulnerability found in Exempi versions 2.4.3 and earlier, specifically in the VPXChunk class within the WEBP_Support.cpp file. This issue arises from the failure to validate width and height values of images.
The Impact of CVE-2017-18235
The vulnerability could be exploited by attackers to launch a denial of service attack on targeted systems. By providing a specially crafted .webp file, an attacker can trigger an assertion failure, leading to the application exiting unexpectedly.
Technical Details of CVE-2017-18235
Examine the specific technical aspects of this CVE.
Vulnerability Description
The VPXChunk class in the XMPFiles/source/FormatSupport/WEBP_Support.cpp file does not ensure non-zero widths and heights, enabling remote attackers to cause a denial of service through a crafted .webp file.
Affected Systems and Versions
- Exempi versions 2.4.3 and earlier
Exploitation Mechanism
- Attackers can exploit the vulnerability by providing a maliciously crafted .webp file to trigger an assertion failure, resulting in an unexpected application exit.
Mitigation and Prevention
Learn how to address and prevent the CVE-2017-18235 vulnerability.
Immediate Steps to Take
- Update Exempi software to version 2.4.3 or later to mitigate the vulnerability
- Implement file input validation to prevent the execution of malicious .webp files
Long-Term Security Practices
- Regularly update software and apply security patches to address known vulnerabilities
- Conduct security assessments and audits to identify and remediate potential weaknesses
Patching and Updates
- Stay informed about security advisories and updates from Exempi to promptly apply patches and fixes