Name: CVE-2021-43305: Heap-based Buffer Overflow
Creator: Rapid7
Published: 2022-03-14T00:00:00.000Z
License: https://www.rapid7.com/legal/website-terms-of-use/
Keywords: CVE, CVE-2021-43305, CWE-122, CWE-787, CVSS 8.8, EPSS 0.00281

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. This issue is very similar to CVE-2021-43304, but the vulnerable copy operation is in a different wildCopy call.

CVSS Details

CVSS 3.1 Base Score: 8.8
CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)

Covered by Rapid7

Product	Vendor Advisory	Solution File	Added	Published
Debian	—	Upgrade clickhouse	Nov 7, 2022	Mar 14, 2022
Ubuntu	—	Upgrade clickhouse-commonUpgrade clickhouse-serverUpgrade clickhouse-tools	Aug 12, 2024	Mar 14, 2022

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CVSS Details

Covered by Rapid7

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