PT-2023-25824 · C-Blosc2 · C-Blosc2

Rish9101 · Published 2023-12-25 · Updated 2025-04-25 · CVE-2023-37188

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions C-blosc2 versions prior to 2.9.3

Description The issue is related to a NULL pointer dereference in the function zfp rate decompress at zfp/blosc2-zfp.c. This indicates a problem where the code attempts to access memory through a null (non-existent) pointer, which can lead to crashes or potentially allow an attacker to execute arbitrary code.

Recommendations For versions prior to 2.9.3, update to version 2.9.3 or later to resolve the issue. As a temporary workaround, consider disabling the zfp rate decompress function until a patch is available.

Exploit

Fix

NULL Pointer Dereference

Weakness Enumeration

CWE-476

Related Identifiers

CVE-2023-37188

Affected Products

C-Blosc2

References · 7

• 🔥 https://github.com/Blosc/c-blosc2/issues/521 · Exploit
• https://github.com/Blosc/c-blosc2/commit/425e8a9a59d49378d57e2116b6c9b0190a5986f5 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2023-37188 · Security Note
• https://osv.dev/vulnerability/CVE-2023-37188 · Vendor Advisory
• https://github.com/Blosc/c-blosc2/compare/v2.9.2...v2.9.3 · Note
• https://t.me/cvenotify/65095 · Telegram Post
• https://t.me/cvenotify/119822 · Telegram Post