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Vulnerability DatabaseCVE-2020-10809

CVE-2020-10809: 
NixOS vulnerability analysis and mitigation

Overview

A heap-based buffer overflow vulnerability (CVE-2020-10809) was discovered in HDF5 through version 1.12.0. The vulnerability exists in the Decompress() function located in decompress.c and can be triggered by sending a crafted file to the gif2h5 binary (Loginsoft Research, NVD).

Technical details

The vulnerability occurs in the Decompress() function when assigning values between integer pointers, where the left side integer pointer OutCode size is smaller than the right side integer pointer Suffix. The issue manifests in the line 'OutCode[OutCount++] = Suffix[CurCode]' in decompress.c. The vulnerability has been assigned a CVSS v3.1 base score of 5.5 MEDIUM (Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H) (Loginsoft Research, NVD).

Impact

When successfully exploited, this vulnerability allows an attacker to cause a Denial of Service condition through a heap-based buffer overflow. The vulnerability affects the gif2h5 binary's ability to process GIF files, potentially leading to application crashes (NVD, Loginsoft Research).

Mitigation and workarounds

Users should upgrade to a version newer than HDF5 1.12.0. The vulnerability was fixed in subsequent releases (NVD).

Additional resources

Source: This report was generated using AI

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