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Status published
High
CVE-2021-43304
Heap buffer overflow in Clickhouse's LZ4 compression codec when parsing...
Vulnerability Description
Heap buffer overflow in Clickhouse's LZ4 compression codec when parsing a malicious query. There is no verification that the copy operations in the LZ4::decompressImpl loop and especially the arbitrary copy operation wildCopy<copy_amount>(op, ip, copy_end), don’t exceed the destination buffer’s limits.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
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Credits & Attribution
No credits recorded in the NVD database.
References
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CVE-2021-42388
Heap out-of-bounds read in Clickhouse's LZ4 compression codec when parsing...
High
8.1
Affected Vendor
yandex
View all reports →Affected Software
clickhouse
Vulnerable Versions:
unspecified
Timeline
Official Publish:
March 14th, 2022
Last Modified:
August 4th, 2024
Added to House:
July 21st, 2026
CVSS Vectors
V3:
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H