cve/2021/CVE-2021-42391.md
2025-09-29 21:09:30 +02:00

711 B

CVE-2021-42391

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.

POC

Reference

Github

No PoCs found on GitHub currently.