CVE-2021-43304
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I. Basic Information for CVE-2021-43304
Vulnerability Information
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Vulnerability Title
N/A
Source: NVD (National Vulnerability Database)
Vulnerability 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<copy_amount>(op, ip, copy_end), don’t exceed the destination buffer’s limits.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
堆缓冲区溢出
Source: NVD (National Vulnerability Database)
Vulnerability Title
Yandex ClickHouse 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Yandex ClickHouse是俄罗斯Yandex公司的一套用于在线分析处理的开源列式数据库。 Yandex ClickHouse 存在缓冲区错误漏洞，目前暂无该漏洞信息，请随时关注CNNVD或厂商公告。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| yandex | clickhouse | unspecified ~ 21.10.2.15-stable | - |
II. Public POCs for CVE-2021-43304
| # | POC Description | Source Link | Shenlong Link |
|---|
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Same Patch Batch · yandex · 2022-03-14 · 7 CVEs total
| CVE-2021-42387 | Yandex ClickHouse 缓冲区错误漏洞 | |
| CVE-2021-42388 | Yandex ClickHouse 缓冲区错误漏洞 | |
| CVE-2021-42389 | Yandex ClickHouse 数字错误漏洞 | |
| CVE-2021-42390 | Yandex ClickHouse 数字错误漏洞 | |
| CVE-2021-42391 | Yandex ClickHouse 数字错误漏洞 | |
| CVE-2021-43305 | Yandex ClickHouse 缓冲区错误漏洞 |
IV. Related Vulnerabilities
Same product: clickhouse
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Specially crafted request could caused undefined behaviour w - CVE-2024-22412
ClickHouse's Role-based Access Control is bypassed when quer - CVE-2023-48704
Unauthenticated heap buffer overflow in Gorrila codec decomp - CVE-2023-48298
Integer underflow leading to stack overflow in FPC codec dec - CVE-2023-47118
Heap buffer overflow in T64 codec decompression
Same weakness: CWE-122
- CVE-2026-8261
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OSGeo gdal SWapi.c SWSDfldsrch heap-based overflow - CVE-2026-42309
Pillow: Heap buffer overflow with nested list coordinates - CVE-2026-45130
Vim: Heap Buffer Overflow in spell file loading
V. Comments for CVE-2021-43304
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