CVE-2019-17452 : Vulnerability Insights and Analysis
Discover the impact of CVE-2019-17452, a NULL pointer dereference vulnerability in Bento4 1.5.1.0, potentially leading to denial of service or code execution. Learn about affected systems, exploitation, and mitigation steps.
A NULL pointer dereference vulnerability has been discovered in Bento4 1.5.1.0, specifically in AP4_DescriptorListInspector::Action in Core/Ap4Descriptor.h, related to AP4_IodsAtom::InspectFields in Core/Ap4IodsAtom.cpp, as demonstrated by mp4dump.
Understanding CVE-2019-17452
This CVE identifies a critical vulnerability in Bento4 software.
What is CVE-2019-17452?
The vulnerability involves a NULL pointer dereference in specific functions within Bento4, potentially leading to a denial of service or arbitrary code execution.
The Impact of CVE-2019-17452
The exploitation of this vulnerability could result in a system crash, leading to a denial of service condition. In some cases, attackers may leverage this flaw to execute malicious code on the affected system.
Technical Details of CVE-2019-17452
This section delves into the technical aspects of the vulnerability.
Vulnerability Description
The vulnerability resides in the AP4_DescriptorListInspector::Action function in Core/Ap4Descriptor.h within Bento4 1.5.1.0. It is connected to the AP4_IodsAtom::InspectFields function in Core/Ap4IodsAtom.cpp, with a practical demonstration provided by mp4dump.
Affected Systems and Versions
- Affected Version: Bento4 1.5.1.0
- Systems using Bento4 software are susceptible to this vulnerability.
Exploitation Mechanism
Attackers can exploit this vulnerability by crafting a malicious MP4 file that triggers the NULL pointer dereference when processed by Bento4, potentially leading to a system crash or code execution.
Mitigation and Prevention
Protecting systems from CVE-2019-17452 requires immediate action and long-term security measures.
Immediate Steps to Take
- Apply vendor-supplied patches or updates to mitigate the vulnerability.
- Consider restricting access to vulnerable systems to trusted users only.
Long-Term Security Practices
- Regularly update software and firmware to ensure the latest security patches are in place.
- Conduct security assessments and penetration testing to identify and address vulnerabilities proactively.
Patching and Updates
- Monitor official sources for patches and updates released by Bento4 to address this vulnerability.
- Promptly apply patches to all affected systems to prevent exploitation of the vulnerability.