CVE-2021-46243 : Security Advisory and Response
Learn about CVE-2021-46243, an HDF5 vulnerability allowing untrusted pointer dereference, leading to Denial of Service (DoS) attacks. Find mitigation steps and patching details.
An untrusted pointer dereference vulnerability exists in HDF5 v1.13.1-1 that can result in Denial of Service (DoS).
Understanding CVE-2021-46243
What is CVE-2021-46243?
This CVE identifies a vulnerability in HDF5 v1.13.1-1, specifically through the function H5O__dtype_decode_helper() in hdf5/src/H5Odtype.c, leading to potential DoS attacks.
The Impact of CVE-2021-46243
The vulnerability can allow malicious actors to exploit untrusted pointer dereference, potentially causing a Denial of Service condition on affected systems.
Technical Details of CVE-2021-46243
Vulnerability Description
The vulnerability arises from an untrusted pointer dereference in HDF5 v1.13.1-1 via the function H5O__dtype_decode_helper() in hdf5/src/H5Odtype.c.
Affected Systems and Versions
- Product: HDF5
- Vendor: N/A
- Versions: 1.13.1-1 (Affected)
Exploitation Mechanism
The issue can be exploited by manipulating the pointer dereference in the mentioned function to trigger a DoS condition.
Mitigation and Prevention
Immediate Steps to Take
- Apply vendor patches if available
- Monitor security advisories for updates
Long-Term Security Practices
- Implement secure coding practices
- Conduct regular security assessments
Patching and Updates
Apply patches released by HDF5 to address the vulnerability.