CVE-2022-3663 in Bento4
Summary
by MITRE • 10/26/2022
A vulnerability was found in Axiomatic Bento4. It has been rated as problematic. This issue affects the function AP4_StsdAtom of the file Ap4StsdAtom.cpp of the component MP4fragment. The manipulation leads to null pointer dereference. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used. The associated identifier of this vulnerability is VDB-212003.
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Analysis
by VulDB Data Team • 07/19/2026
The vulnerability identified as CVE-2022-3663 represents a critical null pointer dereference flaw within the Axiomatic Bento4 multimedia processing library, specifically affecting the AP4_StsdAtom function in the MP4fragment component. This issue stems from improper input validation during the processing of mp4 container files, where the application fails to adequately check for null pointer references before attempting to dereference memory addresses. The flaw exists in the Ap4StsdAtom.cpp source file and demonstrates a classic software security weakness that can lead to application crashes or potentially more severe consequences depending on the execution context. The vulnerability has been assigned a problematic rating by security analysts due to its potential for remote exploitation and the fact that public exploitation techniques have been documented and disseminated.
The technical implementation of this vulnerability occurs when the MP4fragment tool processes malformed mp4 files containing specially crafted stsd (sample description) atoms that trigger the AP4_StsdAtom function to attempt accessing a null pointer reference. This type of flaw falls under CWE-476 which specifically addresses null pointer dereference conditions, making it a well-documented and dangerous class of vulnerability in software security. The attack vector is remote, meaning that an attacker can exploit this vulnerability by delivering maliciously crafted mp4 files to systems that process or validate such media content, particularly those using the Bento4 library for mp4 manipulation. The vulnerability's disclosure status indicates that attackers have already developed working exploit code, making it an active threat rather than a theoretical concern.
The operational impact of CVE-2022-3663 extends beyond simple application crashes, as it can potentially enable more sophisticated attacks depending on the environment where the vulnerable software operates. Systems that rely on Bento4 for media processing, streaming services, content management platforms, or digital rights management applications become vulnerable to service disruption or potential code execution if attackers can leverage this flaw. The vulnerability affects the broader media processing ecosystem since Bento4 is widely used in various multimedia applications and content delivery networks. When exploited, the null pointer dereference can cause denial of service conditions that may be particularly damaging in production environments where continuous media processing is required, potentially leading to significant downtime and loss of service availability.
Mitigation strategies for this vulnerability require immediate action from system administrators and developers who utilize the Bento4 library. The primary recommendation involves updating to the latest version of Axiomatic Bento4 where the null pointer dereference has been patched and properly validated. Organizations should implement input sanitization measures for all mp4 files processed through systems using Bento4, particularly focusing on validation of stsd atoms and other container metadata. Network-based protections can include implementing content filtering mechanisms that scan mp4 files for known malicious patterns or using sandboxing techniques to isolate media processing operations. From a defensive perspective, the vulnerability aligns with ATT&CK technique T1059 which covers command and scripting interpreter usage, as attackers may attempt to leverage such flaws to execute arbitrary code within the processing environment. Security monitoring should include detection of unusual process termination patterns or memory access violations that may indicate exploitation attempts, while incident response procedures should be updated to address potential remote code execution scenarios that could arise from this vulnerability.