VULNERABILITY INTELLIGENCE

CVE-2021-42391

CVSS score6.5 MEDIUM
EPSS probability1.37%
CISA KEVNot currently listed
Published2022-03-14
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Description

Divide-by-zero in Clickhouse's Gorilla compression codec when parsing a malicious query. The first byte of the compressed buffer is used in a modulo operation without being checked for 0.

Weakness classification

  • reefs@jfrog.com: CWE-369
  • nvd@nist.gov: CWE-369

Primary references