PT-2023-25823 · C-Blosc2 · C-Blosc2

Rish9101 · Published 2023-12-25 · Updated 2025-04-25 · CVE-2023-37187

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 zfp acc decompress function, located in the zfp/blosc2-zfp.c file. This indicates a problem where the software attempts to access memory through a null, or 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 restricting access to the zfp acc decompress function until a patch is applied.

Exploit

Fix

NULL Pointer Dereference

Weakness Enumeration

CWE-476

Related Identifiers

CVE-2023-37187

Affected Products

C-Blosc2

References · 7

• 🔥 https://github.com/Blosc/c-blosc2/issues/520 · Exploit
• https://github.com/Blosc/c-blosc2/commit/425e8a9a59d49378d57e2116b6c9b0190a5986f5 · Patch
• https://osv.dev/vulnerability/CVE-2023-37187 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2023-37187 · Security Note
• https://github.com/Blosc/c-blosc2/compare/v2.9.2...v2.9.3 · Note
• https://t.me/cvenotify/119821 · Telegram Post
• https://t.me/cvenotify/65094 · Telegram Post