CVE-2021-42387
Last modified
CVE-2021-42387 is a high-severity vulnerability rated 8.1/10 on the CVSS scale. 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. EPSS estimates a 1.55% chance of exploitation in the next 30 days.
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Clickhouse | Clickhouse | < 21.10.2.15 |
| Debian | Debian Linux | 10.0 |
References
- https://jfrog.com/blog/7-rce-and-dos-vulnerabilities-found-in-clickhouse-dbmsExploit, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2022/11/msg00002.htmlMailing List, Third Party Advisory
- https://jfrog.com/blog/7-rce-and-dos-vulnerabilities-found-in-clickhouse-dbmsExploit, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2022/11/msg00002.htmlMailing List, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
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