CVE-2019-19958 : Security Advisory and Response
Learn about CVE-2019-19958, a vulnerability in libIEC61850 1.4.0 due to an integer signedness problem in StringUtils_createStringFromBuffer, potentially leading to denial of service. Find mitigation steps and prevention measures.
In libIEC61850 1.4.0, a potential integer signedness problem in the StringUtils_createStringFromBuffer function can lead to excessive memory allocation and denial of service.
Understanding CVE-2019-19958
Within the libIEC61850 1.4.0 version, a function named StringUtils_createStringFromBuffer in the file common/string_utilities.c has been identified to have a potential integer signedness problem. This particular issue could potentially result in an excessive allocation of memory, thereby causing a denial of service.
What is CVE-2019-19958?
CVE-2019-19958 is a vulnerability in libIEC61850 1.4.0 that stems from an integer signedness problem in the StringUtils_createStringFromBuffer function, potentially leading to a denial of service due to excessive memory allocation.
The Impact of CVE-2019-19958
The vulnerability could allow attackers to exploit the excessive memory allocation issue, leading to a denial of service condition, impacting the availability of the affected system.
Technical Details of CVE-2019-19958
In-depth technical information about the vulnerability.
Vulnerability Description
The issue lies in the StringUtils_createStringFromBuffer function in common/string_utilities.c, where an integer signedness problem exists, allowing for excessive memory allocation.
Affected Systems and Versions
- Product: Not applicable
- Vendor: Not applicable
- Version: Not applicable
Exploitation Mechanism
The vulnerability can be exploited by malicious actors to trigger an attempted excessive memory allocation, resulting in a denial of service.
Mitigation and Prevention
Guidelines to mitigate and prevent the CVE-2019-19958 vulnerability.
Immediate Steps to Take
- Monitor for any unusual memory allocation patterns.
- Implement proper input validation to prevent malicious inputs.
- Consider limiting memory allocation to prevent excessive usage.
Long-Term Security Practices
- Regularly update the software to patched versions.
- Conduct security audits to identify and address similar vulnerabilities.
Patching and Updates
Ensure that the libIEC61850 software is updated to a version where the integer signedness issue in StringUtils_createStringFromBuffer is fixed.