HDF hdf5-h5dump up to 1.13.0 h5tools_str.c h5tools_str_sprint buffer overflow

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.5$0-$5k0.00

Summaryinfo

A vulnerability identified as critical has been detected in HDF hdf5-h5dump up to 1.13.0. This affects the function h5tools_str_sprint in the library /hdf5/tools/lib/h5tools_str.c. The manipulation leads to buffer overflow. This vulnerability is referenced as CVE-2021-37501. No exploit is available.

Detailsinfo

A vulnerability was found in HDF hdf5-h5dump up to 1.13.0 (Database Software) and classified as problematic. This issue affects the function h5tools_str_sprint in the library /hdf5/tools/lib/h5tools_str.c. The manipulation with an unknown input leads to a buffer overflow vulnerability. Using CWE to declare the problem leads to CWE-120. The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow. Impacted is availability. The summary by CVE is:

Buffer Overflow vulnerability in HDFGroup hdf5-h5dump 1.12.0 through 1.13.0 allows attackers to cause a denial of service via h5tools_str_sprint in /hdf5/tools/lib/h5tools_str.c.

The weakness was published 02/03/2023. The advisory is shared at github.com. The identification of this vulnerability is CVE-2021-37501 since 07/26/2021. Technical details are known, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 239731 (TencentOS Server 4: hdf5 (TSSA-2025:0024)), which helps to determine the existence of the flaw in a target environment.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at Tenable (239731). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.5
VulDB Meta Temp Score: 5.5

VulDB Base Score: 3.5
VulDB Temp Score: 3.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Buffer overflow
CWE: CWE-120 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 239731
Nessus Name: TencentOS Server 4: hdf5 (TSSA-2025:0024)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

07/26/2021 🔍
02/03/2023 +557 days 🔍
02/03/2023 +0 days 🔍
06/21/2025 +869 days 🔍

Sourcesinfo

Advisory: github.com
Status: Confirmed

CVE: CVE-2021-37501 (🔍)
GCVE (CVE): GCVE-0-2021-37501
GCVE (VulDB): GCVE-100-220145

Entryinfo

Created: 02/03/2023 21:06
Updated: 06/21/2025 11:26
Changes: 02/03/2023 21:06 (40), 03/04/2023 15:23 (11), 06/21/2025 11:26 (17)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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