clickhouse: Heap out-of-bounds read in Clickhouse's LZ4 compression codec when parsing a malicious query
CVE-2021-42387 is fixed in 5 products on 1 platform, first by clickhouse-client 18.16.1+ds-7ubuntu0.1, released March 14, 2022. It is not reported as exploited. Patch Radar priority: High.
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 upper bounds of the source of the copy operation.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| clickhouse · Debian 12.15 (bookworm) | 18.16.1+ds-7.3 | DEBIAN-CVE-2021-42387 | Mar 14, 2022 |
| clickhouse-client · Ubuntu 20.04 LTS (focal) | 18.16.1+ds-7ubuntu0.1 | clickhouse-client 18.16.1+ds-7ubuntu0.1 | Mar 14, 2022 |
| clickhouse-common · Ubuntu 20.04 LTS (focal) | 18.16.1+ds-7ubuntu0.1 | clickhouse-common 18.16.1+ds-7ubuntu0.1 | Mar 14, 2022 |
| clickhouse-server · Ubuntu 20.04 LTS (focal) | 18.16.1+ds-7ubuntu0.1 | clickhouse-server 18.16.1+ds-7ubuntu0.1 | Mar 14, 2022 |
| clickhouse-tools · Ubuntu 20.04 LTS (focal) | 18.16.1+ds-7ubuntu0.1 | clickhouse-tools 18.16.1+ds-7ubuntu0.1 | Mar 14, 2022 |
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