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Vulnerability CVE-2021-42387
Published: 2022-03-14 Modified: 2022-03-15
| 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. |
Type:
CWE-125 (Out-of-bounds Read)
CVSS2 => (AV:N/AC:L/Au:S/C:P/I:N/A:P)
| CVSS Base Score |
Impact Subscore |
Exploitability Subscore |
5.5/10 |
4.9/10 |
8/10 |
| Exploit range |
Attack complexity |
Authentication |
Remote |
Low |
Single time |
| Confidentiality impact |
Integrity impact |
Availability impact |
Partial |
None |
Partial |
References: |
https://jfrog.com/blog/7-rce-and-dos-vulnerabilities-found-in-clickhouse-dbms
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