Vulnerability CVE-2021-42391
Published: 2022-03-14   Modified: 2022-03-15

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.

Type:

CWE-369

 (Divide By Zero)

CVSS2 => (AV:N/AC:L/Au:N/C:N/I:N/A:P)

CVSS Base Score
Impact Subscore
Exploitability Subscore
5/10
2.9/10
10/10
Exploit range
Attack complexity
Authentication
Remote
Low
No required
Confidentiality impact
Integrity impact
Availability impact
None
None
Partial
Affected software
Yandex -> Clickhouse 

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