high8.1
CVE-2021-42387
Heap out-of-bounds read in Clickhouse's LZ4 compression codec when parsing a malicious query.
Impact
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.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Clickhouse | Clickhouse | before 21.10.2.15 |
| Debian | Debian Linux | Version 10.0 |
Weakness classification
References
- NVD record
- CVE.org record
- https://jfrog.com/blog/7-rce-and-dos-vulnerabilities-found-in-clickhouse-dbms
- https://lists.debian.org/debian-lts-announce/2022/11/msg00002.html
- https://jfrog.com/blog/7-rce-and-dos-vulnerabilities-found-in-clickhouse-dbms
- https://lists.debian.org/debian-lts-announce/2022/11/msg00002.html