CVE-2018-14588 in Bento4
Summary
by MITRE
An issue has been discovered in Bento4 1.5.1-624. A NULL pointer dereference can occur in AP4_DataBuffer::SetData in Core/Ap4DataBuffer.cpp.
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Analysis
by VulDB Data Team • 04/25/2023
The vulnerability identified as CVE-2018-14588 represents a critical NULL pointer dereference flaw within the Bento4 multimedia framework version 1.5.1-624. This issue resides in the AP4_DataBuffer::SetData method located in the Core/Ap4DataBuffer.cpp source file, making it a fundamental component of the software's memory management system. The flaw demonstrates a classic software security vulnerability where the application fails to properly validate pointer references before attempting to access memory locations, creating an exploitable condition that can lead to system instability or potential code execution.
The technical nature of this vulnerability aligns with CWE-476, which specifically addresses NULL pointer dereference conditions in software systems. When the AP4_DataBuffer::SetData function processes input data without adequate validation of the data buffer pointer, it can proceed to dereference a NULL reference, causing the application to crash or behave unpredictably. This type of vulnerability typically occurs when developers assume that memory allocation or pointer assignment will succeed without proper error checking mechanisms. The flaw demonstrates poor defensive programming practices where the code does not implement proper null pointer validation before attempting to access memory locations, making it susceptible to exploitation by malicious actors who can craft specific inputs to trigger the condition.
From an operational perspective, this vulnerability poses significant risks to systems that rely on Bento4 for multimedia processing and content management. The NULL pointer dereference can result in application crashes, service interruptions, and potential denial of service conditions that can affect legitimate users and operations. Attackers can exploit this vulnerability by providing malformed data to applications that utilize Bento4, potentially causing the target system to become unresponsive or terminate unexpectedly. The impact extends beyond simple service disruption as the vulnerability can be leveraged as a stepping stone for more sophisticated attacks, particularly in environments where Bento4 is used for processing untrusted multimedia content from external sources.
The exploitation of this vulnerability requires careful crafting of input data that will cause the AP4_DataBuffer::SetData method to attempt to dereference a NULL pointer during normal operation. This typically involves providing specially formatted multimedia files or data streams that trigger the specific code path within the Bento4 library. The vulnerability is particularly concerning in environments where multimedia processing applications are exposed to untrusted inputs, as it can be used to cause arbitrary code execution or system instability. Security professionals should consider this vulnerability in the context of ATT&CK technique T1203, which involves exploitation of software vulnerabilities for privilege escalation or system compromise.
Mitigation strategies for CVE-2018-14588 should prioritize immediate patching of affected Bento4 installations to version 1.5.1-625 or later, which contains the necessary fixes to prevent the NULL pointer dereference condition. Organizations should implement input validation measures that prevent malformed data from reaching the vulnerable code paths, including proper buffer size checking and pointer validation before memory operations. Additionally, system administrators should consider implementing network segmentation and access controls to limit exposure of systems that utilize Bento4, particularly those processing untrusted multimedia content. The vulnerability also highlights the importance of thorough code review processes and automated static analysis tools that can identify similar pointer dereference patterns in other software components, helping to prevent similar issues from emerging in future software versions.