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CVE-2021-42391

Medium

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.

SeverityMedium
CVSS6.5
Exploit probability—
ProductClickhouse
PublishedMar 14, 2022
First seenMar 14, 2022
Weakness typeCWE-369CWE-369

How to fix

Update
  • clickhouse clickhouse21.10.2.15 or later

Affected products

ProductAffected versionsFixed in
clickhouse clickhousev < 21.10.2.1521.10.2.15

Check your version

Choose the product and enter the version you run to see whether it falls in the affected range.

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