ClickHouse LZ4 Compression LZ4::decompressImpl heap-based overflow

CVSS Meta Temp Score
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CTI Interest Score
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7.0$0-$5k0.00

Summaryinfo

A vulnerability was found in ClickHouse and classified as critical. This vulnerability affects the function LZ4::decompressImpl of the component LZ4 Compression. Such manipulation leads to heap-based overflow. This vulnerability is uniquely identified as CVE-2021-43304. No exploit exists.

Detailsinfo

A vulnerability was found in ClickHouse (the affected version is unknown). It has been rated as critical. Affected by this issue is the function LZ4::decompressImpl of the component LZ4 Compression. The manipulation with an unknown input leads to a heap-based overflow vulnerability. Using CWE to declare the problem leads to CWE-122. A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc(). Impacted is confidentiality, integrity, and availability.

The weakness was disclosed 03/15/2022. The advisory is shared for download at jfrog.com. This vulnerability is handled as CVE-2021-43304 since 11/03/2021. There are known technical details, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 216691 (ClickHouse < 21.10.2.15 Multiple Vulnerabilities), which helps to determine the existence of the flaw in a target environment.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at Tenable (216691). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Name

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.1
VulDB Meta Temp Score: 7.1

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.8
NVD Vector: 🔍

CVSSv2info

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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Heap-based overflow
CWE: CWE-122 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 216691
Nessus Name: ClickHouse < 21.10.2.15 Multiple Vulnerabilities

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

11/03/2021 🔍
03/15/2022 +132 days 🔍
03/15/2022 +0 days 🔍
06/25/2025 +1198 days 🔍

Sourcesinfo

Advisory: jfrog.com
Status: Not defined

CVE: CVE-2021-43304 (🔍)
GCVE (CVE): GCVE-0-2021-43304
GCVE (VulDB): GCVE-100-194912

Entryinfo

Created: 03/15/2022 07:57
Updated: 06/25/2025 23:29
Changes: 03/15/2022 07:57 (36), 03/16/2022 15:41 (1), 03/16/2022 15:47 (1), 02/24/2025 21:56 (16), 06/25/2025 23:29 (19)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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