PT-2021-6324 · Unknown+4 · Clickhouse+3

Or Peles + 1 · Published 2021-10-18 · Updated 2024-07-31 · CVE-2021-43305

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 in the LZ4::decompressImpl loop do not exceed the destination buffer's limits. The vulnerable copy operation is in a different wildCopy call, making it similar to a previously identified issue.

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:2022-01317

CVE-2021-43305

DLA-3176-1

USN-6933-1

Affected Products

Alt Linux

Clickhouse

Linuxmint

Ubuntu

References · 21

• 🔥 https://jfrog.com/blog/7-rce-and-dos-vulnerabilities-found-in-clickhouse-dbms · Exploit
• https://cve.org/CVERecord?id=CVE-2021-43305 · Security Note
• https://bdu.fstec.ru/vul/2022-01317 · Security Note
• https://ubuntu.com/security/CVE-2021-43305 · Vendor Advisory
• https://osv.dev/vulnerability/DLA-3176-1 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2021-43305 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2021-43305 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-6933-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2021-42387 · Vendor Advisory
• https://ubuntu.com/security/CVE-2021-42388 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2021-43305 · Vendor Advisory
• https://osv.dev/vulnerability/USN-6933-1 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-43305 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-43305 · Security Note
• https://github.com/ClickHouse/ClickHouse/commit/2aea1c8d4a5be320365472052d8a48bf69fd9fe9 · Note