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.

CVSS v3.0 8.8 HIGH
CVSS v2.0 6.5 MEDIUM

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CVSS v3.0 : HIGH

V3 Legend

Vector :

Exploitability : 2.8 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

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CVSS v2.0 : MEDIUM

V2 Legend

Vector : AV:N/AC:L/Au:S/C:P/I:P/A:P

Exploitability : 8.0 / Impact : 6.4

Access Vector NETWORK

Access Complexity LOW

Authentication SINGLE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://jfrog.com/blog/7-rce-and-dos-vulnerabilities-found-in-clickhouse-dbms	Exploit Third Party Advisory
https://lists.debian.org/debian-lts-announce/2022/11/msg00002.html	Mailing List Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:yandex:clickhouse:*:*:*:*:*:*:*:*

Configuration 2 (hide)

cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*

Information

Published : 2022-03-14 16:15

Updated : 2022-12-07 19:24

NVD link : CVE-2021-43305

Mitre link : CVE-2021-43305

JSON object : View

CWE

CWE-787

Out-of-bounds Write

Products Affected

yandex

clickhouse

debian

debian_linux

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