medium6.5
CVE-2021-42389
Divide-by-zero in Clickhouse's Delta compression codec when parsing a malicious query.
Impact
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.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Clickhouse | Clickhouse | before 21.10.2.15 |