CVE-2021-20302 : Vulnerability Insights and Analysis
Discover how CVE-2021-20302 impacts OpenEXR, affecting system availability. Learn about the vulnerability, affected versions, and mitigation steps.
A flaw was found in OpenEXR's TiledInputFile functionality, allowing an attacker to trigger a floating-point exception error. The vulnerability has the highest impact on system availability.
Understanding CVE-2021-20302
This CVE identifies a security flaw in OpenEXR's TiledInputFile feature that could be exploited by an attacker to disrupt system availability.
What is CVE-2021-20302?
CVE-2021-20302 is a vulnerability in OpenEXR that enables an attacker to cause a floating-point exception error by uploading a specially crafted non-image file.
The Impact of CVE-2021-20302
The primary impact of this vulnerability is on system availability, which could be compromised by an attacker exploiting the flaw.
Technical Details of CVE-2021-20302
This section delves into the specific technical aspects of the CVE.
Vulnerability Description
The vulnerability arises from a flaw in OpenEXR's TiledInputFile functionality, allowing the triggering of a floating-point exception error.
Affected Systems and Versions
OpenEXR versions prior to v2.5.4 are affected by this vulnerability. The issue has been resolved in version 2.5.4 and later.
Exploitation Mechanism
Attackers can exploit this vulnerability by submitting a crafted single-part non-image file for processing by OpenEXR, leading to the trigger of a floating-point exception error.
Mitigation and Prevention
Protecting systems against CVE-2021-20302 involves taking immediate action and implementing long-term security practices.
Immediate Steps to Take
Users are advised to update OpenEXR to version 2.5.4 or later to mitigate the vulnerability. Additionally, monitoring for suspicious activities is recommended.
Long-Term Security Practices
Implementing security measures such as input validation, regular security assessments, and user awareness training can enhance overall system security.
Patching and Updates
Regularly applying security patches and updates provided by OpenEXR is crucial to safeguard against known vulnerabilities.