#VU61461 Heap-based buffer overflow in ClickHouse - CVE-2021-42388
Published: March 18, 2022
Vulnerability identifier: #VU61461
Vulnerability risk: High
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2021-42388
CWE-ID: CWE-122
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
ClickHouse
ClickHouse
Software vendor:
ClickHouse
ClickHouse
Description
The vulnerability allows a remote attacker to compromise the target system.
The vulnerability exists due to a boundary error in the LZ4 compression codec when parsing queries. A remote attacker can pass specially crafted data to the application, trigger heap-based buffer overflow and gain access to sensitive information or perform a denial of service (DoS) attack.
Remediation
Install updates from vendor's website.