CVE-2021-23215 : What You Need to Know

An integer overflow leading to a heap-buffer overflow was found in the DwaCompressor of OpenEXR in versions before 3.0.1. This vulnerability could allow an attacker to crash an application compiled with OpenEXR.

Understanding CVE-2021-23215

This section provides insights into the impact and technical details of CVE-2021-23215.

What is CVE-2021-23215?

CVE-2021-23215 refers to an integer overflow leading to a heap-buffer overflow discovered in OpenEXR versions prior to 3.0.1. Attackers could exploit this vulnerability to crash applications utilizing OpenEXR.

The Impact of CVE-2021-23215

The impact of this CVE includes the potential for a denial-of-service scenario where an application compiled with the vulnerable OpenEXR version could be crashed by malicious actors.

Technical Details of CVE-2021-23215

Providing in-depth technical insights on the vulnerability.

Vulnerability Description

The vulnerability arises from an integer overflow in the DwaCompressor component, leading to a heap-buffer overflow.

Affected Systems and Versions

The vulnerability affects OpenEXR versions before 3.0.1, specifically impacting OpenEXR 3.0.1.

Exploitation Mechanism

Attackers can exploit the integer overflow to trigger a heap-buffer overflow, potentially causing a crash in applications compiled with the vulnerable OpenEXR version.

Mitigation and Prevention

Measures to mitigate and prevent exploitation of CVE-2021-23215.

Immediate Steps to Take

Update OpenEXR to version 3.0.1 or above to eliminate the vulnerability.
Monitor vendor advisories and security mailing lists for patch releases.

Long-Term Security Practices

Regularly update software to the latest patched versions.
Employ runtime protections to prevent or detect heap-buffer overflows.

Patching and Updates

Stay informed about security updates and promptly apply patches to ensure system security.