CVE-2021-25804 : Exploit Details and Defense Strategies
Learn about CVE-2021-25804, a vulnerability in VideoLAN VLC Media Player 3.0.11 that could lead to a denial of service attack. Find out the impact, technical details, affected systems, and mitigation steps.
A NULL-pointer dereference in "Open" in avi.c of VideoLAN VLC Media Player 3.0.11 can cause a denial of service (DOS) in the application.
Understanding CVE-2021-25804
This CVE highlights a vulnerability in VideoLAN VLC Media Player 3.0.11 that can lead to a denial of service attack when exploited.
What is CVE-2021-25804?
The CVE-2021-25804 vulnerability involves a NULL-pointer dereference in the avi.c file of VideoLAN VLC Media Player 3.0.11, potentially resulting in a denial of service (DOS) within the application.
The Impact of CVE-2021-25804
If exploited, this vulnerability could allow an attacker to trigger a denial of service condition in the affected application, potentially disrupting its normal functionality.
Technical Details of CVE-2021-25804
This section provides more in-depth technical details regarding the CVE.
Vulnerability Description
The vulnerability involves a NULL-pointer dereference in the "Open" function within the avi.c file of VideoLAN VLC Media Player 3.0.11, which could be exploited to launch a denial of service attack.
Affected Systems and Versions
The vulnerability affects VideoLAN VLC Media Player version 3.0.11. Users with this version installed may be vulnerable to exploitation.
Exploitation Mechanism
Attackers can exploit this vulnerability by crafting a malicious input to trigger the NULL-pointer dereference in the "Open" function, leading to a denial of service situation.
Mitigation and Prevention
To address CVE-2021-25804 and enhance security, the following measures can be implemented:
Immediate Steps to Take
- Users are advised to update VideoLAN VLC Media Player to a patched version provided by the vendor.
- Employ network security measures to detect and block potential exploitation attempts.
Long-Term Security Practices
- Regularly update software and systems to ensure the latest security patches are applied.
- Educate users on safe browsing habits and the importance of cybersecurity awareness.
Patching and Updates
Stay informed about security updates released by VideoLAN for VLC Media Player and promptly apply patches to mitigate known vulnerabilities.