CVE-2017-14260 in Bento4
Summary
by MITRE
In the SDK in Bento4 1.5.0-616, the AP4_StssAtom class in Ap4StssAtom.cpp contains a Write Memory Access Violation vulnerability. It is possible to exploit this vulnerability and possibly execute arbitrary code by opening a crafted .MP4 file.
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Analysis
by VulDB Data Team • 12/28/2022
The vulnerability identified as CVE-2017-14260 resides within the Bento4 SDK version 1.5.0-616, specifically within the AP4_StssAtom class implementation in the Ap4StssAtom.cpp source file. This represents a critical memory access violation that manifests during the processing of crafted media files, particularly those with mp4 container format. The flaw occurs when the software attempts to write data to memory locations without proper validation of buffer boundaries or input parameters, creating an exploitable condition that can be leveraged by malicious actors.
The technical nature of this vulnerability aligns with CWE-121, which describes stack-based buffer overflow conditions, and CWE-787, which addresses out-of-bounds write errors. The AP4_StssAtom class is responsible for handling sample table atoms within mp4 containers, specifically managing the synchronization sample table that defines which samples are sync samples for decoding purposes. When processing a malformed mp4 file containing crafted stss atom data, the implementation fails to properly validate the size or content of the atom data before attempting to write to memory locations, resulting in a memory access violation that can be exploited to overwrite adjacent memory regions.
From an operational perspective, this vulnerability presents a significant risk to systems that process or handle mp4 media files, particularly those that utilize the Bento4 SDK for media handling, streaming, or content management. Attackers can craft malicious mp4 files that, when opened by vulnerable applications, trigger the memory access violation and potentially execute arbitrary code with the privileges of the affected application. This creates a remote code execution vector that can be exploited through various attack vectors including web browsers, media players, or content management systems that rely on the Bento4 SDK for processing mp4 content.
The exploitation of this vulnerability follows patterns consistent with the attack techniques documented in the MITRE ATT&CK framework under the T1203 technique for exploitation for execution, and T1059 for command and scripting interpreter. The attack chain typically involves crafting a malicious mp4 file with specially constructed stss atom data that causes the buffer overflow when processed by the vulnerable Bento4 SDK. The successful exploitation can lead to complete system compromise, allowing attackers to execute arbitrary commands, escalate privileges, or establish persistent access to the affected system.
Mitigation strategies for CVE-2017-14260 should prioritize immediate patching of affected Bento4 SDK versions to 1.5.0-617 or later, which contains the necessary fixes for the memory access violation. Organizations should also implement defensive measures such as input validation for mp4 files, sandboxing of media processing applications, and network segmentation to limit the potential impact of successful exploitation. Additionally, security monitoring should be enhanced to detect anomalous behavior patterns that might indicate exploitation attempts, and regular security assessments should be conducted to identify other potential vulnerabilities in media processing pipelines that might be susceptible to similar memory corruption issues.