CVE-2021-42390: Divide-by-zero in Clickhouse's DeltaDouble compression codec when parsing a malicious query. The first byte of the compressed buffer is used in a modulo…

PriorityP432medium6.5CVSS 3.1

AVNACLPRLUINSUCNINAH

EPSS

1.24%

65.4th percentile

Divide-by-zero in Clickhouse's DeltaDouble 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.

Affected

3 ranges

Vendor	Product	Version range	Fixed in
clickhouse	clickhouse	< 21.10.2.15	21.10.2.15
debian	clickhouse	—	—
yandex	clickhouse	>= unspecified < 21.10.2.15-stable	21.10.2.15-stable

CVSS provenance

nvdv3.16.5MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

nvdv2.04.0MEDIUMAV:N/AC:L/Au:S/C:N/I:N/A:P

vendor_debian6.5LOW

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