CVE-2021-42388

描述

Heap out-of-bounds read in Clickhouse's LZ4 compression codec when parsing a malicious query. As part of the LZ4::decompressImpl() loop, a 16-bit unsigned user-supplied value ('offset') is read from the compressed data. The offset is later used in the length of a copy operation, without checking the lower bounds of the source of the copy operation.

如何修補 CVE-2021-42388

要修補 CVE-2021-42388,請將受影響套件升級到下列已修補版本。

• Debian/clickhouse—升級至 18.16.1+ds-7.2+deb11u1 或更新版本

CVE-2021-42388 正在被利用嗎?

低 — EPSS 為 1.5%,目前沒有觀察到大規模利用活動。

受影響套件(1)

• from 0, < 18.16.1+ds-7.2+deb11u1

CVSS 分數

參考連結(1)

• ADVISORYsecurity-tracker.debian.org/tracker/CVE-2021-42388