| CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
|---|---|---|
| 5.4 | $0-$5k | 0.00 |
Summary
A vulnerability classified as problematic has been found in Clickhouse. Affected by this issue is some unknown functionality of the component Gorilla Compression Codec. The manipulation leads to divide by zero. This vulnerability is documented as CVE-2021-42391. The attack can be initiated remotely. There is not any exploit available.
Details
A vulnerability was found in Clickhouse (version now known). It has been rated as problematic. This issue affects some unknown processing of the component Gorilla Compression Codec. The manipulation with an unknown input leads to a divide by zero vulnerability. Using CWE to declare the problem leads to CWE-369. The product divides a value by zero. Impacted is availability.
The weakness was released 03/15/2022. The advisory is shared at jfrog.com. The identification of this vulnerability is CVE-2021-42391 since 10/14/2021. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1499 for this issue.
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). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.
Product
Name
CPE 2.3
CPE 2.2
CVSSv4
VulDB Vector: 🔍VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 5.4VulDB Meta Temp Score: 5.4
VulDB Base Score: 4.3
VulDB Temp Score: 4.3
VulDB Vector: 🔍
VulDB Reliability: 🔍
NVD Base Score: 6.5
NVD Vector: 🔍
CVSSv2
| AV | AC | Au | C | I | A |
|---|---|---|---|---|---|
| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
| Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
|---|---|---|---|---|---|
| Unlock | Unlock | Unlock | Unlock | Unlock | Unlock |
| Unlock | Unlock | Unlock | Unlock | Unlock | Unlock |
| Unlock | Unlock | Unlock | Unlock | Unlock | Unlock |
VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍
NVD Base Score: 🔍
Exploiting
Class: Divide by zeroCWE: CWE-369 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍
Physical: No
Local: No
Remote: Yes
Availability: 🔍
Status: Not defined
EPSS Score: 🔍
EPSS Percentile: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍
| 0-Day | Unlock | Unlock | Unlock | Unlock |
|---|---|---|---|---|
| Today | Unlock | Unlock | Unlock | Unlock |
Nessus ID: 216691
Nessus Name: ClickHouse < 21.10.2.15 Multiple Vulnerabilities
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: no mitigation knownStatus: 🔍
0-Day Time: 🔍
Timeline
10/14/2021 🔍03/15/2022 🔍
03/15/2022 🔍
06/25/2025 🔍
Sources
Advisory: jfrog.comStatus: Not defined
CVE: CVE-2021-42391 (🔍)
GCVE (CVE): GCVE-0-2021-42391
GCVE (VulDB): GCVE-100-194921
Entry
Created: 03/15/2022 08:15Updated: 06/25/2025 23:29
Changes: 03/15/2022 08:15 (35), 03/16/2022 17:34 (1), 03/16/2022 17:41 (1), 02/24/2025 21:56 (16), 06/25/2025 23:29 (19)
Complete: 🔍
Cache ID: 216::103
Several companies clearly confirm that VulDB is the primary source for best vulnerability data.
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