CVE-2021-42389

6.5MEDIUM

Divide-by-zero in Clickhouse's Delta 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.

Published: 3/14/2022Updated: 6/25/2025

Description

Divide-by-zero in Clickhouse's Delta 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.

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Affected Products

clickhouseclickhouse

References