CVE-2016-8886 in Jasper
Summary
by MITRE
The jas_malloc function in libjasper/base/jas_malloc.c in JasPer before 1.900.11 allows remote attackers to have unspecified impact via a crafted file, which triggers a memory allocation failure.
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Analysis
by VulDB Data Team • 11/14/2022
The vulnerability identified as CVE-2016-8886 resides within the JasPer library, a widely used open-source software for handling JPEG 2000 image format processing. This library serves as a critical component in numerous applications and systems that require robust image handling capabilities, making it a prime target for exploitation. The specific flaw is located in the jas_malloc function within the file libjasper/base/jas_malloc.c, which governs memory allocation operations for the library's internal processes. This memory management function fails to properly validate input parameters when processing malformed or crafted image files, creating a potential pathway for attackers to manipulate the library's memory handling behavior.
The technical nature of this vulnerability stems from inadequate input validation within the memory allocation routine, which allows attackers to craft specially designed image files that trigger unexpected memory allocation failures. When the JasPer library processes these malicious inputs, the jas_malloc function encounters malformed data that causes it to either fail in allocating memory properly or to allocate memory in unintended ways. This condition can lead to various security consequences including denial of service scenarios, memory corruption, or potentially more severe outcomes depending on how the library is integrated into larger applications. The vulnerability is classified under CWE-122, which represents "Heap-based Buffer Overflow," as the improper memory handling can result in buffer overflows that affect heap memory structures. The specific impact remains unspecified due to the nature of memory allocation failures, which can manifest differently based on the system environment and how the vulnerable library is utilized.
The operational impact of CVE-2016-8886 extends across numerous systems and applications that depend on the JasPer library for image processing capabilities. This includes but is not limited to digital imaging software, medical imaging systems, satellite image processing platforms, and various multimedia applications that handle JPEG 2000 format files. Attackers can exploit this vulnerability remotely by delivering malicious image files that, when processed by vulnerable applications, cause the library to fail in its memory allocation operations. The consequences can range from application crashes and denial of service conditions to more severe outcomes such as arbitrary code execution, particularly when the vulnerable library is used in contexts where memory corruption could be leveraged for privilege escalation. According to ATT&CK framework, this vulnerability aligns with T1203 - Exploitation for Client Execution and T1499 - Endpoint Denial of Service, as it enables attackers to compromise system availability and potentially execute malicious code through client-side applications.
Mitigation strategies for CVE-2016-8886 primarily focus on updating to JasPer version 1.900.11 or later, which contains patches specifically addressing the memory allocation flaw in the jas_malloc function. Organizations should conduct comprehensive vulnerability assessments to identify all systems and applications that utilize the vulnerable JasPer library and prioritize patching efforts accordingly. Additional protective measures include implementing input validation controls at application level, deploying network-based intrusion detection systems to monitor for suspicious image file transfers, and establishing secure coding practices that emphasize robust error handling and memory management. System administrators should also consider implementing application whitelisting policies that restrict execution of image processing applications with known vulnerabilities, while maintaining regular security updates and monitoring for similar memory-related vulnerabilities in other third-party libraries. The vulnerability highlights the importance of proper memory management in security-critical libraries and demonstrates how seemingly benign memory allocation functions can become significant attack vectors when proper validation mechanisms are absent.