Vulnerabilities
Vulnerable Software

Vulnerability Details CVE-2021-43305

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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.003
EPSS Ranking 56.7%
CVSS Severity
CVSS v3 Score 8.8
CVSS v2 Score 6.5
Products affected by CVE-2021-43305


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