CVE-2018-20543 : Security Advisory and Response
Learn about CVE-2018-20543, a denial of service vulnerability in LIBXSMM 1.10 due to excessive memory allocation attempt. Find out how to mitigate and prevent this issue.
A denial of service vulnerability can be triggered by an excessive memory allocation attempt in LIBXSMM 1.10, specifically in the generator_spgemm_csc_reader.c file at the function libxsmm_sparse_csc_reader.
Understanding CVE-2018-20543
This CVE involves a denial of service risk due to a memory allocation issue in LIBXSMM 1.10.
What is CVE-2018-20543?
The vulnerability in LIBXSMM 1.10 can lead to a denial of service through an attempt to allocate excessive memory in the generator_spgemm_csc_reader.c file.
The Impact of CVE-2018-20543
The vulnerability allows attackers to cause a denial of service by exploiting the memory allocation flaw in LIBXSMM 1.10.
Technical Details of CVE-2018-20543
This section provides more technical insights into the CVE.
Vulnerability Description
An attempted excessive memory allocation at libxsmm_sparse_csc_reader in generator_spgemm_csc_reader.c in LIBXSMM 1.10 results in a denial of service.
Affected Systems and Versions
- Product: Not applicable
- Vendor: Not applicable
- Version: Not applicable
Exploitation Mechanism
The vulnerability is exploited by triggering an excessive memory allocation attempt in the specified file and function within LIBXSMM 1.10.
Mitigation and Prevention
Protecting systems from CVE-2018-20543 requires immediate actions and long-term security practices.
Immediate Steps to Take
- Monitor for any unusual memory allocation patterns.
- Implement proper input validation to prevent memory allocation abuse.
Long-Term Security Practices
- Regularly update LIBXSMM to the latest version to patch known vulnerabilities.
- Conduct security audits to identify and address memory-related issues.
- Educate developers on secure coding practices to prevent memory vulnerabilities.
- Employ memory protection mechanisms to limit the impact of memory-related attacks.
- Consider implementing runtime protections to detect and mitigate memory allocation abuses.
Patching and Updates
Ensure timely patching of LIBXSMM to address the vulnerability and prevent potential denial of service attacks.