CVE-2013-1441 in ExactImage
Summary
by MITRE
econvert in ExactImage 0.8.9 and earlier does not properly initialize the setjmp variable, which allows context-dependent users to cause a denial of service (crash) via a crafted image file.
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Analysis
by VulDB Data Team • 01/07/2022
The vulnerability identified as CVE-2013-1441 affects the econvert utility within ExactImage version 0.8.9 and earlier releases. This flaw resides in the improper initialization of a setjmp variable during the image conversion process, creating a condition where maliciously crafted image files can trigger unexpected program behavior. The vulnerability specifically impacts the econvert component which is responsible for converting between various image formats, making it a critical component in image processing workflows.
The technical root cause of this vulnerability stems from inadequate initialization of the setjmp variable within the econvert utility's execution flow. When processing image files, the program relies on setjmp/longjmp mechanisms for error handling and control flow management. However, the failure to properly initialize this variable creates a scenario where the program's execution context becomes unpredictable when encountering malformed input files. This improper initialization allows attackers to manipulate the program's control flow by providing specially crafted image files that trigger the uninitialized variable's undefined behavior.
The operational impact of this vulnerability manifests as a denial of service condition that results in application crashes. Context-dependent users who can influence the image processing workflow can exploit this weakness by submitting maliciously constructed image files to cause the econvert utility to terminate unexpectedly. This creates a significant risk in automated processing environments where image conversion is a routine operation, as the crash can disrupt legitimate workflows and potentially allow for service disruption attacks. The vulnerability specifically affects systems where ExactImage is used for batch processing or automated image conversion tasks.
From a cybersecurity perspective, this vulnerability aligns with CWE-457, which addresses the use of uninitialized variables in software development practices. The flaw represents a classic example of improper initialization leading to undefined behavior in control flow mechanisms. The ATT&CK framework categorizes this as a denial of service attack vector through application-level manipulation, specifically targeting process control flow and execution stability. Organizations relying on ExactImage for image processing may experience operational disruption, particularly in environments where automated workflows depend on consistent application behavior.
Mitigation strategies for this vulnerability involve immediate patching of the ExactImage software to version 0.9.0 or later, which contains the necessary fixes for proper setjmp variable initialization. System administrators should also implement input validation measures to filter potentially malicious image files before processing, though this approach provides only partial protection. Additionally, deploying application sandboxing techniques and monitoring for unexpected process termination can help detect exploitation attempts. Regular vulnerability assessments and keeping all image processing software updated remains critical for maintaining security posture against similar initialization flaws in multimedia processing applications.