CVE-2021-43305

Publication date

2022-03-14 00:00:00

Family

JFROG

State

PUBLISHED

Description

Heap buffer overflow in Clickhouses 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(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.