CVE-2021-42387

NameCVE-2021-42387
DescriptionHeap 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.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub advisories/code/issues, web search, more)
Debian Bugs1008216

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
clickhouse (PTS)buster18.16.1+ds-4vulnerable
bullseye, sid18.16.1+ds-7.2vulnerable

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
clickhousesource(unstable)(unfixed)1008216

Notes

[bullseye] - clickhouse <no-dsa> (Minor issue)
https://github.com/ClickHouse/ClickHouse/commit/2aea1c8d4a5be320365472052d8a48bf69fd9fe9 (v21.9.1.7685)
https://github.com/ClickHouse/ClickHouse/commit/6d83eacec42c7c403c99804a713a9d38caa4a45d (v21.9.1.7685)
https://github.com/ClickHouse/ClickHouse/pull/27136
https://jfrog.com/blog/7-rce-and-dos-vulnerabilities-found-in-clickhouse-dbms/

Search for package or bug name: Reporting problems