PT-2021-6323 · Unknown+2 · Clickhouse+1

Or Peles + 1 · Published 2021-10-18 · Updated 2022-12-08 · CVE-2021-43304

Positive Technologies (AI Summary)

CVSS v2.0

10

High

Base vector

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

Name of the Vulnerable Software and Affected Versions ClickHouse (affected versions not specified)

Description The issue is related to a heap buffer overflow in ClickHouse's LZ4 compression codec. This occurs when parsing a malicious query, as there is no verification that copy operations do not exceed the destination buffer's limits. Specifically, the arbitrary copy operation in the LZ4::decompressImpl loop can lead to this overflow. An attacker could potentially exploit this vulnerability to execute arbitrary code remotely.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Heap Based Buffer Overflow

Memory Corruption

Weakness Enumeration

CWE-122

CWE-787

Related Identifiers

ALT-PU-2022-1418

ALT-PU-2022-1601

ALT-PU-2022-1682

BDU:2022-01316

CVE-2021-43304

DLA-3176-1

Affected Products

Alt Linux

Clickhouse

References · 11

• 🔥 https://jfrog.com/blog/7-rce-and-dos-vulnerabilities-found-in-clickhouse-dbms · Exploit
• https://bdu.fstec.ru/vul/2022-01316 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2021-43304 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-43304 · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2021-43304 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-43304 · Vendor Advisory
• https://osv.dev/vulnerability/DLA-3176-1 · Vendor Advisory
• https://github.com/ClickHouse/ClickHouse/releases/tag/v21.10.2.15-stable · Note
• https://lists.debian.org/debian-lts-announce/2022/11/msg00002.html · Note
• https://t.me/nekaspersky/2001 · Telegram Post
• https://t.me/true_secator/2737 · Telegram Post