CVE-2021-45830 : What You Need to Know
Discover the details of CVE-2021-45830, a critical heap-based buffer overflow flaw in HDF5 1.13.1-1 leading to a potential Denial of Service (DoS) risk. Learn about impacts, affected systems, exploitation, and mitigation steps.
A heap-based buffer overflow vulnerability in HDF5 1.13.1-1 could lead to a Denial of Service.
Understanding CVE-2021-45830
This CVE involves a critical heap-based buffer overflow vulnerability in HDF5 1.13.1-1 that has the potential to cause a Denial of Service (DoS).
What is CVE-2021-45830?
The vulnerability exists in HDF5 1.13.1-1 through the function H5F_addr_decode_len in /hdf5/src/H5Fint.c, allowing attackers to trigger a DoS attack.
The Impact of CVE-2021-45830
The exploitation of this vulnerability could lead to a Denial of Service condition, impacting the availability of the affected system.
Technical Details of CVE-2021-45830
This section covers the technical details and specifics of CVE-2021-45830.
Vulnerability Description
A heap-based buffer overflow vulnerability exists in HDF5 1.13.1-1 via H5F_addr_decode_len in /hdf5/src/H5Fint.c, which could cause a Denial of Service.
Affected Systems and Versions
- Product: Not applicable
- Vendor: Not applicable
- Version: 1.13.1-1 (affected)
Exploitation Mechanism
The vulnerability can be exploited by crafting malicious input to trigger the buffer overflow, potentially leading to a DoS condition.
Mitigation and Prevention
Protect your systems by following the mitigation and prevention strategies.
Immediate Steps to Take
- Apply vendor patches or updates promptly.
- Monitor security advisories for any related patches.
- Implement the principle of least privilege to restrict system access.
Long-Term Security Practices
- Regularly update and patch software to address known vulnerabilities.
- Conduct security training for personnel to enhance awareness of potential threats.
Patching and Updates
Ensure timely installation of security patches and updates to mitigate the risk of exploitation.