CVE-2022-43594 in OpenImageIO
Summary
by MITRE • 12/23/2022
Multiple denial of service vulnerabilities exist in the image output closing functionality of OpenImageIO Project OpenImageIO v2.4.4.2. Specially crafted ImageOutput Objects can lead to multiple null pointer dereferences. An attacker can provide malicious multiple inputs to trigger these vulnerabilities.This vulnerability applies to writing .bmp files.
If you want to get best quality of vulnerability data, you may have to visit VulDB.
Analysis
by VulDB Data Team • 01/23/2023
The vulnerability identified as CVE-2022-43594 represents a critical denial of service flaw within the OpenImageIO project's image output closing functionality. This issue affects version 2.4.4.2 of the OpenImageIO library, which is widely used for image processing and manipulation across various applications and systems. The vulnerability manifests specifically when handling .bmp file writing operations, making it particularly concerning for applications that process bitmap images. The flaw stems from inadequate input validation and error handling within the ImageOutput object processing pipeline, creating multiple pathways for null pointer dereferences to occur during file closure operations.
The technical implementation of this vulnerability involves specially crafted ImageOutput Objects that exploit weaknesses in the library's memory management and object validation routines. When these malformed objects are processed during .bmp file creation, the system attempts to dereference null pointers within the closing functionality, leading to application crashes and system instability. This type of vulnerability falls under CWE-476 which specifically addresses null pointer dereference conditions, and represents a classic example of improper input validation that can be exploited to cause denial of service attacks. The attack vector is particularly insidious because it requires only the submission of malicious inputs to trigger the vulnerability, making it accessible to attackers with minimal technical expertise.
The operational impact of CVE-2022-43594 extends beyond simple application crashes, potentially affecting entire systems that rely on OpenImageIO for image processing tasks. In environments where image handling is critical, such as content management systems, digital asset management platforms, or media processing servers, this vulnerability could lead to significant service disruption. The vulnerability is particularly dangerous in automated processing environments where batch operations might be triggered by untrusted inputs, as a single malicious image file could cause cascading failures across multiple processing threads or services. This aligns with ATT&CK technique T1499.004 which describes denial of service through resource exhaustion or application instability.
Mitigation strategies for this vulnerability should focus on immediate patching of affected systems, with the release of OpenImageIO version 2.4.4.3 addressing the null pointer dereference issues. Organizations should implement input validation measures that sanitize all image data before processing, particularly for .bmp files, and consider implementing rate limiting or sandboxing mechanisms for image handling operations. Additionally, monitoring systems should be configured to detect unusual application behavior patterns that might indicate exploitation attempts. The vulnerability highlights the importance of robust error handling in image processing libraries and underscores the need for comprehensive testing of edge cases in file format processing functions. Security teams should also consider implementing network segmentation for systems handling image data and establish incident response procedures specifically addressing denial of service vulnerabilities in multimedia processing components.