Heap-based buffer overflow in ClickHouse - CVE-2021-43304

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Main Vulnerability Database Vulnerabilities #VU61458

Heap-based buffer overflow in ClickHouse - CVE-2021-43304

Published: March 18, 2022


Vulnerability identifier: #VU61458
CSH Severity: High
CVSS v4: 8.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2021-43304
CWE-ID: CWE-122
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error in LZ4 compression codec. A remote attacker can pass specially crafted data to the application, trigger heap-based buffer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.


Affected software

ClickHouse
Ubuntu
clickhouse-common (Ubuntu package)
clickhouse-server (Ubuntu package)
clickhouse-tools (Ubuntu package)

How to mitigate CVE-2021-43304

Install updates from vendor's website.

ClickHouse - update to 21.10.2.15
clickhouse-common (Ubuntu package) - update to 18.16.1+ds-7ubuntu0.1
clickhouse-server (Ubuntu package) - update to 18.16.1+ds-7ubuntu0.1
clickhouse-tools (Ubuntu package) - update to 18.16.1+ds-7ubuntu0.1

External References

Related Security Bulletins