CVE-2020-9622 in DNG Software Development Kit
Summary
by MITRE
Adobe DNG Software Development Kit (SDK) 1.5 and earlier versions have an out-of-bounds read vulnerability. Successful exploitation could lead to information disclosure.
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Analysis
by VulDB Data Team • 10/27/2020
Adobe DNG Software Development Kit versions 1.5 and earlier contain a critical out-of-bounds read vulnerability that represents a significant security risk for systems processing digital negative image files. This vulnerability falls under the common weakness enumeration CWE-125, which specifically addresses out-of-bounds read conditions that occur when a program attempts to access memory beyond the boundaries of a buffer or array. The flaw manifests within the SDK's processing routines for DNG image files, where insufficient input validation and boundary checking allows maliciously crafted image data to trigger memory access violations.
The technical implementation of this vulnerability stems from inadequate validation of image metadata and file structure elements within the DNG SDK. When processing malformed DNG files, the SDK fails to properly validate array indices or buffer boundaries before accessing memory locations, creating opportunities for attackers to manipulate file contents in ways that cause the application to read beyond allocated memory regions. This behavior can result in the disclosure of sensitive information from adjacent memory locations, potentially exposing system memory contents including potentially sensitive data, authentication tokens, or cryptographic keys that may be stored in neighboring memory segments.
From an operational perspective, this vulnerability creates substantial risk for organizations that process or convert DNG image files through Adobe's SDK, particularly in environments where untrusted image files are handled. The information disclosure impact can range from exposure of system memory contents to potential leakage of application state information that may aid in further exploitation attempts. Attackers could leverage this vulnerability to construct sophisticated attack chains that combine the out-of-bounds read with other techniques to achieve arbitrary code execution or privilege escalation within affected systems. The vulnerability affects not only end-user applications but also server-side processing systems that utilize the SDK for automated image conversion or batch processing operations.
Organizations should prioritize immediate mitigation through patching Adobe DNG SDK to version 1.6 or later, which includes proper input validation and boundary checking mechanisms. System administrators should implement strict file validation procedures for all incoming DNG files, including content scanning and file format verification before processing. Network segmentation and access controls should be enforced to limit exposure of systems that process DNG files, while monitoring systems should be configured to detect anomalous file processing patterns that may indicate exploitation attempts. Additionally, regular security assessments of image processing workflows and input validation procedures should be conducted to ensure comprehensive protection against similar vulnerabilities. The vulnerability demonstrates the critical importance of robust input validation and memory safety practices in multimedia processing libraries, aligning with ATT&CK technique T1059.007 for input validation and T1068 for privilege escalation through memory corruption vulnerabilities.