CVE-2021-43305
14.03.2022, 23:15
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), dont exceed the destination buffers limits. This issue is very similar to CVE-2021-43304, but the vulnerable copy operation is in a different wildCopy call.Enginsight
| Vendor | Product | Version |
|---|---|---|
| yandex | clickhouse | 𝑥 < 21.10.2.15 |
| debian | debian_linux | 10.0 |
𝑥
= Vulnerable software versions
Debian Releases
Ubuntu Releases
Common Weakness Enumeration
- CWE-122 - Heap-based Buffer OverflowA heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().
- CWE-787 - Out-of-bounds WriteThe software writes data past the end, or before the beginning, of the intended buffer.