CVE-2020-36123 : Security Advisory and Response
Learn about CVE-2020-36123, a critical vulnerability in saitoha libsixel v1.8.6 that could allow attackers to trigger a double free, leading to denial of service or arbitrary code execution. Find mitigation steps and preventive measures here.
A vulnerability in saitoha libsixel v1.8.6 could allow an attacker to trigger a double free via a specific component, potentially leading to a denial of service or arbitrary code execution.
Understanding CVE-2020-36123
This CVE identifies a critical issue in the libsixel library that could be exploited by malicious actors.
What is CVE-2020-36123?
The vulnerability in saitoha libsixel v1.8.6 allows for a double free via the component sixel_chunk_destroy at a specific path within the source code.
The Impact of CVE-2020-36123
Exploitation of this vulnerability could result in a denial of service condition or potentially enable attackers to execute arbitrary code on the affected system.
Technical Details of CVE-2020-36123
This section provides more in-depth technical information about the vulnerability.
Vulnerability Description
The issue arises from improper handling of memory within the sixel_chunk_destroy component in the chunk.c file of the libsixel library.
Affected Systems and Versions
- Product: Not applicable
- Vendor: Not applicable
- Version: Not applicable
Exploitation Mechanism
Attackers can exploit this vulnerability by triggering the double free condition through specially crafted inputs, potentially leading to the execution of malicious code.
Mitigation and Prevention
Protecting systems from CVE-2020-36123 requires immediate action and long-term security measures.
Immediate Steps to Take
- Apply vendor patches or updates if available to address the vulnerability.
- Monitor for any unusual system behavior that could indicate exploitation of the double free issue.
Long-Term Security Practices
- Conduct regular security assessments and code reviews to identify and address similar vulnerabilities.
- Implement secure coding practices to prevent memory-related vulnerabilities in software development.
Patching and Updates
- Stay informed about security advisories related to libsixel and promptly apply patches released by the vendor to mitigate the risk of exploitation.