CVE-2021-31256 Explained : Impact and Mitigation
Discover the details of CVE-2021-31256, a memory leak vulnerability in the stbl_GetSampleInfos function of MP4Box in GPAC 1.0.1. Learn how to prevent memory disclosure attacks.
A memory leak vulnerability has been identified in the stbl_GetSampleInfos function in MP4Box within GPAC 1.0.1. This vulnerability could be exploited by attackers to read memory contents through a maliciously crafted file.
Understanding CVE-2021-31256
This section provides insights into the nature and impact of CVE-2021-31256.
What is CVE-2021-31256?
The CVE-2021-31256 vulnerability is a memory leak issue present in the stbl_GetSampleInfos function in MP4Box of GPAC 1.0.1, allowing unauthorized access to memory using a specially designed file.
The Impact of CVE-2021-31256
The impact of this vulnerability is significant as it enables attackers to gain access to sensitive information stored in memory, posing a risk to data confidentiality and integrity.
Technical Details of CVE-2021-31256
In this section, we delve into the technical aspects of CVE-2021-31256.
Vulnerability Description
The vulnerability arises from a memory leak in the stbl_GetSampleInfos function within MP4Box of GPAC 1.0.1, which facilitates unauthorized memory access.
Affected Systems and Versions
The affected version is GPAC 1.0.1, potentially exposing systems utilizing this version to memory disclosure attacks.
Exploitation Mechanism
Attackers can exploit this vulnerability by manipulating a crafted file to trigger the memory leak in the stbl_GetSampleInfos function, allowing them to read memory contents.
Mitigation and Prevention
Protective measures and best practices to mitigate the risks associated with CVE-2021-31256.
Immediate Steps to Take
Immediately cease the use of GPAC 1.0.1 and consider safer alternatives. Exercise caution while handling untrusted MP4 files to prevent memory leak exploitation.
Long-Term Security Practices
Regularly update software components, conduct security assessments, and implement robust memory management practices to prevent memory leaks and unauthorized access.
Patching and Updates
Monitor GPAC for security patches and updates addressing CVE-2021-31256. Apply patches promptly to safeguard systems against potential exploitation.