CVE-2021-42389

Description

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 Platforms

Weakness Type

CWE-369, CWE-369

References

• https://jfrog.com/blog/7-rce-and-dos-vulnerabilities-found-in-clickhouse-dbms
• https://jfrog.com/blog/7-rce-and-dos-vulnerabilities-found-in-clickhouse-dbms