CVE-2025-2309: HDF5 Type Conversion Logic H5T__bit_copy heap-based overflow
First published: Fri Mar 14 2025(Updated: )
A vulnerability has been found in HDF5 1.14.6 and classified as critical. This vulnerability affects the function H5T__bit_copy of the component Type Conversion Logic. The manipulation leads to heap-based buffer overflow. Local access is required to approach this attack. The exploit has been disclosed to the public and may be used. The real existence of this vulnerability is still doubted at the moment. The vendor was contacted early about a batch of vulnerabilities. His response was "reject" without further explanation. We have not received an elaboration even after asking politely for further details. Currently we assume that the vendor wants to "dispute" the entries which is why they are flagged as such until further details become available.
Credit: cna@vuldb.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| HDF5 |
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Reference Links
Frequently Asked Questions
What is the severity of CVE-2025-2309?
CVE-2025-2309 has been classified as a critical vulnerability due to its potential for exploitation via heap-based buffer overflow.
How do I fix CVE-2025-2309?
To mitigate CVE-2025-2309, update HDF5 to version 1.14.7 or later, which addresses the vulnerability.
Who is affected by CVE-2025-2309?
CVE-2025-2309 affects users of HDF5 version 1.14.6.
What components are impacted by CVE-2025-2309?
CVE-2025-2309 impacts the Type Conversion Logic within the H5T__bit_copy function.
Is local access required to exploit CVE-2025-2309?
Yes, exploiting CVE-2025-2309 requires local access to the system running the vulnerable version of HDF5.
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