high8.8
CVE-2021-43305
Heap buffer overflow in Clickhouse's LZ4 compression codec when parsing a malicious query.
Impact
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.
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