CVE-2021-43305 — Heap-based Buffer Overflow in Clickhouse

CWE-122 — Heap-based Buffer OverflowCWE-787 — Out-of-bounds Write6 documents5 sources
Severity
8.8HIGHNVD
OSV7.8
EPSS
0.3%
top 48.44%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
3
ClickhouseDebian ClickhouseDebian Linux
Timeline
PublishedMar 14
Latest updateJul 31

Description

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(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 vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HExploitability: 2.8 | Impact: 5.9

Affected Packages4 packages

▶debiandebian/clickhouse< clickhouse 18.16.1+ds-7.3 (bookworm)
▶NVDclickhouse/clickhouse< 21.10.2.15
▶Debianclickhouse/clickhouse< 18.16.1+ds-7.2+deb11u1+1
▶Ubuntuclickhouse/clickhouse< 18.16.1+ds-7ubuntu0.1

Also affects: Debian Linux 10.0

🔴Vulnerability Details

3
OSV
clickhouse vulnerabilities↗2024-07-31
▶
GHSA
GHSA-rjm8-hjq2-73j6: Heap buffer overflow in Clickhouse's LZ4 compression codec when parsing a malicious query↗2022-03-16
▶
OSV
CVE-2021-43305: Heap buffer overflow in Clickhouse's LZ4 compression codec when parsing a malicious query↗2022-03-14
▶

📋Vendor Advisories

2
Ubuntu
ClickHouse vulnerabilities↗2024-07-31
▶
Debian
CVE-2021-43305: clickhouse - Heap buffer overflow in Clickhouse's LZ4 compression codec when parsing a malici...↗2021
▶