CVE-2021-43304
High
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.
SeverityHigh
CVSS8.8
Exploit probability—
Product
Clickhouse
PublishedMar 14, 2022
First seenMar 14, 2022
Weakness typeCWE-122CWE-122
How to fix
Update
- clickhouse clickhouse21.10.2.15 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| clickhouse clickhouse | v < 21.10.2.15 | 21.10.2.15 |
| debian debian_linux | 10.0 | — |
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