Security Advisory

CVE-2021-42388

CVE vulnerability detail - eXtreme Datacenter Security Operations

Published 2022-03-14 00:00:00

Last updated 2024-08-04 03:30:38

Assigner JFROG

CVSS score not scored

State PUBLISHED

Description

Heap out-of-bounds read in Clickhouse's LZ4 compression codec when parsing a malicious query. As part of the LZ4::decompressImpl() loop, a 16-bit unsigned user-supplied value ('offset') is read from the compressed data. The offset is later used in the length of a copy operation, without checking the lower bounds of the source of the copy operation.

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