CVE-2021-42387
CVSS V2 Medium 5.5
CVSS V3 High 8.1
Description
Heap out-of-bounds read in Clickhouse's LZ4 compression codec when parsing a malicious query. As part of the LZ4::decompressImpl() loop, a 16-bit unsigned user-supplied value ('offset') is read from the compressed data. The offset is later used in the length of a copy operation, without checking the upper bounds of the source of the copy operation.
Overview
- CVE ID
- CVE-2021-42387
- Assigner
- reefs@jfrog.com
- Vulnerability Status
- Analyzed
- Published Version
- 2022-03-14T23:15:07
- Last Modified Date
- 2022-12-03T02:47:06
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| cpe:2.3:a:yandex:clickhouse:*:*:*:*:*:*:*:* | 1 | OR | 21.10.2.15 | |
| cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* | 1 | OR |
CVSS Version 2
- Version
- 2.0
- Vector String
- AV:N/AC:L/Au:S/C:P/I:N/A:P
- Access Vector
- NETWORK
- Access Compatibility
- LOW
- Authentication
- SINGLE
- Confidentiality Impact
- PARTIAL
- Integrity Impact
- NONE
- Availability Impact
- PARTIAL
- Base Score
- 5.5
- Severity
- MEDIUM
- Exploitability Score
- 8
- Impact Score
- 4.9
CVSS Version 3
- Version
- 3.1
- Vector String
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
- Attack Vector
- NETWORK
- Attack Compatibility
- LOW
- Privileges Required
- LOW
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality Impact
- HIGH
- Availability Impact
- HIGH
- Base Score
- 8.1
- Base Severity
- HIGH
- Exploitability Score
- 2.8
- Impact Score
- 5.2
References
| Reference URL | Reference Tags |
|---|---|
| https://jfrog.com/blog/7-rce-and-dos-vulnerabilities-found-in-clickhouse-dbms | Exploit Third Party Advisory |
| https://lists.debian.org/debian-lts-announce/2022/11/msg00002.html | Mailing List Third Party Advisory |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2021-42387 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-42387 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-05-10 15:44:59 | Added to TrackCVE | |||
| 2022-12-06 12:18:23 | security@jfrog.com | reefs@jfrog.com | CVE Assigner | updated |
| 2022-12-06 12:18:23 | 2022-03-14T23:15Z | 2022-03-14T23:15:07 | CVE Published Date | updated |
| 2022-12-06 12:18:23 | 2022-12-03T02:47:06 | CVE Modified Date | updated | |
| 2022-12-06 12:18:23 | Analyzed | Vulnerability Status | updated | |
| 2022-12-06 12:18:28 | References | updated |