Vulnerabilities > CVE-2021-42391 - Divide By Zero vulnerability in Yandex Clickhouse

047910
CVSS 5.0 - MEDIUM
Attack vector
NETWORK
Attack complexity
LOW
Privileges required
NONE
Confidentiality impact
NONE
Integrity impact
NONE
Availability impact
PARTIAL
network
low complexity
yandex
CWE-369

Summary

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.

Vulnerable Configurations

Part Description Count
Application
Yandex
348

Common Weakness Enumeration (CWE)