Code execution via unchecked global heap object size
Published May 9, 2024 · Updated Feb 13, 2025
Heap-based buffer overflow in The HDF Group HDF5 1.14.3 and earlier allows remote attackers to corrupt memory via a malformed HDF5 file. H5VL__native_blob_get called H5HG_read into the supplied buffer before verifying that the global heap object size matched that buffer. Processing attacker-controlled HDF5 data is required; the overflow can crash the parser and corrupt its instruction pointer, but reliable code execution is not established.
Summary
What happened
Heap-based buffer overflow in The HDF Group HDF5 1.14.3 and earlier allows remote attackers to corrupt memory via a malformed HDF5 file. H5VL__native_blob_get called H5HG_read into the supplied buffer before verifying that the global heap object size matched that buffer. Processing attacker-controlled HDF5 data is required; the overflow can crash the parser and corrupt its instruction pointer, but reliable code execution is not established.
The record
- CVE
- CVE-2024-32621
- Published
- May 9, 2024
- Updated
- Feb 13, 2025
- Vendor
- The HDF Group
- Product
- HDF5
- Classifications
- CWE-122, T1203
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- May 9, 2024CVE publishedPublication date reported by the CVE source.
- Feb 13, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=0 <=1.14.3
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Public exploit references
- HDF5 CVE-2024-32621 malformed test filefunctional · validated
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Technologies
Your stack
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Your stack
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