CVE-2021-43304
Published: 14 March 2022
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.
Priority
Status
| Package | Release | Status |
|---|---|---|
|
clickhouse
Launchpad, Ubuntu, Debian |
focal |
Not vulnerable
(code not present)
|
| impish |
Ignored
(end of life)
|
|
| trusty |
Ignored
(end of standard support)
|
|
| upstream |
Needs triage
|
|
| xenial |
Ignored
(end of standard support)
|
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 8.8 |
| Attack vector | Network |
| Attack complexity | Low |
| Privileges required | Low |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | High |
| Integrity impact | High |
| Availability impact | High |
| Vector | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
References
- https://github.com/ClickHouse/ClickHouse/commit/2aea1c8d4a5be320365472052d8a48bf69fd9fe9 (v21.9.1.7685)
- https://github.com/ClickHouse/ClickHouse/commit/6d83eacec42c7c403c99804a713a9d38caa4a45d (v21.9.1.7685)
- https://github.com/ClickHouse/ClickHouse/pull/27136
- https://jfrog.com/blog/7-rce-and-dos-vulnerabilities-found-in-clickhouse-dbms/
- https://jfrog.com/blog/7-rce-and-dos-vulnerabilities-found-in-clickhouse-dbms
- https://www.cve.org/CVERecord?id=CVE-2021-43304
- NVD
- Launchpad
- Debian