CVE-2021-43304 is a high-severity heap buffer overflow vulnerability in ClickHouse's LZ4 compression codec, affecting various ClickHouse and Debian ClickHouse products. It allows an authenticated attacker to execute arbitrary code or cause a denial of service by sending a specially crafted query, due to insufficient bounds checking during decompression. With a CVSS score of 8.8, this vulnerability presents a significant risk for confidentiality, integrity, and availability. There is currently no evidence of active exploitation, nor are there publicly available exploits or significant community discussion surrounding this CVE.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 21.10.2.15CPE matchmatch criteria | cpe:2.3:a:clickhouse:clickhouse:*:*:*:*:*:*:*:* | ||
10.0CPE matchmatch criteria | cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.