CVE-2021-43305

2022-03-1400:00:00

ubuntu.com

6.5 Medium

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

SINGLE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

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

8.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

0.001 Low

EPSS

Percentile

38.3%

JSON

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.

Bugs

<http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1008216>

OSVersionArchitecturePackageVersionFilename
ubuntu20.04noarchclickhouse< anyUNKNOWN
ubuntu23.10noarchclickhouse< anyUNKNOWN
ubuntu24.04noarchclickhouse< anyUNKNOWN