CyberRota Analysis
This is a high severity vulnerability with a CVSS score of 8.8. See the original NVD description below for full technical details.
CVE
CVE-2021-43305
Severity
HIGH
CVSS
8.8
EPSS
1.67%
Original NVD Description
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. This issue is very similar to CVE-2021-43304, but the vulnerable copy operation is in a different wildCopy call.
Related CVEs
Other vulnerabilities affecting the same vendor(s)