Vulnerabilities > CVE-2021-43304 - Out-of-bounds Write vulnerability in multiple products

047910
CVSS 8.8 - HIGH
Attack vector
NETWORK
Attack complexity
LOW
Privileges required
LOW
Confidentiality impact
HIGH
Integrity impact
HIGH
Availability impact
HIGH
network
low complexity
yandex
debian
CWE-787

Summary

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.

Vulnerable Configurations

Part Description Count
Application
Yandex
348
OS
Debian
1

Common Weakness Enumeration (CWE)