CVE-2018-19128 : Security Advisory and Response
Discover the impact of CVE-2018-19128 on Libav version 12.3. Learn about the heap-based buffer over-read vulnerability and how to mitigate the risk of denial-of-service attacks.
Libav version 12.3 is vulnerable to a heap-based buffer over-read in the decode_frame function of the libavcodec module, allowing attackers to trigger a denial-of-service via a specially crafted avi file.
Understanding CVE-2018-19128
This CVE entry highlights a specific vulnerability in the Libav software.
What is CVE-2018-19128?
The vulnerability in version 12.3 of Libav stems from a heap-based buffer over-read in the decode_frame function within the lcldec.c file of the libavcodec module. It can be exploited by malicious actors using a specially crafted avi file, leading to a denial-of-service condition.
The Impact of CVE-2018-19128
The exploitation of this vulnerability can result in a denial-of-service attack, potentially disrupting the availability of the affected system.
Technical Details of CVE-2018-19128
This section delves into the technical aspects of the CVE.
Vulnerability Description
The vulnerability in Libav 12.3 allows for a heap-based buffer over-read in the decode_frame function of the libavcodec/lcldec.c file, enabling attackers to cause denial-of-service by leveraging a crafted avi file.
Affected Systems and Versions
- Affected Version: 12.3 of Libav
- Systems using this specific version are vulnerable to exploitation.
Exploitation Mechanism
The vulnerability can be exploited by an attacker through a specially crafted avi file, triggering the heap-based buffer over-read and leading to a denial-of-service condition.
Mitigation and Prevention
Protective measures and actions to mitigate the risks associated with CVE-2018-19128.
Immediate Steps to Take
- Update Libav to a patched version that addresses the vulnerability.
- Avoid opening avi files from untrusted or unknown sources.
Long-Term Security Practices
- Regularly update software and apply security patches promptly.
- Implement network security measures to detect and prevent malicious activities.
Patching and Updates
- Stay informed about security updates for Libav and apply them as soon as they are available.