CVE-2018-18827 : Vulnerability Insights and Analysis
Learn about CVE-2018-18827, a heap-based buffer over-read vulnerability in Libav 12.3, allowing attackers to trigger denial-of-service via a crafted aac file. Find mitigation steps and prevention measures.
A vulnerability has been identified in Libav 12.3, specifically in the ff_vc1_pred_dc function within the vc1_block.c file. This vulnerability, known as a heap-based buffer over-read, can be exploited by malicious individuals to trigger a denial-of-service condition through the use of a carefully crafted aac file.
Understanding CVE-2018-18827
This CVE-2018-18827 involves a heap-based buffer over-read vulnerability in Libav 12.3.
What is CVE-2018-18827?
CVE-2018-18827 is a security vulnerability found in the ff_vc1_pred_dc function within the vc1_block.c file of Libav 12.3. It can be exploited by attackers to cause a denial-of-service by using a specifically crafted aac file.
The Impact of CVE-2018-18827
The vulnerability can allow malicious actors to exploit the heap-based buffer over-read, leading to a denial-of-service condition on systems running the affected version of Libav.
Technical Details of CVE-2018-18827
This section provides more technical insights into the CVE-2018-18827 vulnerability.
Vulnerability Description
The vulnerability exists in the ff_vc1_pred_dc function in the vc1_block.c file of Libav 12.3, enabling attackers to execute a denial-of-service attack through a maliciously crafted aac file.
Affected Systems and Versions
- Product: Libav 12.3
- Vendor: N/A
- Version: N/A
Exploitation Mechanism
The vulnerability can be exploited by malicious individuals through the use of a carefully crafted aac file, triggering a heap-based buffer over-read and leading to a denial-of-service condition.
Mitigation and Prevention
To address CVE-2018-18827, follow these mitigation strategies:
Immediate Steps to Take
- Apply security patches or updates provided by the vendor.
- Avoid opening aac files from untrusted or unknown sources.
Long-Term Security Practices
- Regularly update software and libraries to the latest versions.
- Implement network security measures to detect and prevent malicious activities.
Patching and Updates
Ensure that you regularly check for updates and patches from Libav to address the CVE-2018-18827 vulnerability.