Fixed in ClickHouse 21.10.2.15, 2021-10-18 

Heap buffer overflow in Clickhouse's LZ4 compression codec when parsing a malicious query. There is no verification that the copy operations in the LZ4::decompressImpl loop and especially the arbitrary copy operation wildCopyop, ip, copyend, don’t exceed the destination buffer’s limits...

Fixed in ClickHouse Release 1.1.54388, 2018-06-28 

“remote” table function allowed arbitrary symbols in “user”, “password” and “defaultdatabase” fields which led to Cross Protocol Request Forgery Attacks...

Fixed in ClickHouse Release 19.14.3.3, 2019-09-10 

Аn attacker that has write access to ZooKeeper and who can run a custom server available from the network where ClickHouse runs, can create a custom-built malicious server that will act as a ClickHouse replica and register it in ZooKeeper. When another replica will fetch data part from the...

Fixed in ClickHouse Release 19.13.6.1, 2019-09-20 

Table function url had the vulnerability allowed the attacker to inject arbitrary HTTP headers in the request...

Fixed in ClickHouse v24.5, 2024-08-01​

It is possible to redirect the execution flow of the ClickHouse server process from an unauthenticated vector by sending a specially crafted request to the ClickHouse server native interface. This redirection is limited to what is available within a 256-byte range of memory at the time of...

Fixed in ClickHouse Release 18.10.3, 2018-08-13 

unixODBC allowed loading arbitrary shared objects from the file system which led to a Remote Code Execution vulnerability...

Fixed in ClickHouse Release 1.1.54390, 2018-07-06 

ClickHouse MySQL client had “LOAD DATA LOCAL INFILE” functionality enabled that allowed a malicious MySQL database read arbitrary files from the connected ClickHouse server...

Fixed in ClickHouse 21.4.3.21, 2021-04-12 

An attacker that has CREATE DICTIONARY privilege, can read arbitary file outside permitted directory...

Fixed in ClickHouse 22.9.1.2603, 2022-09-22​

A heap buffer overflow issue was discovered in ClickHouse server. A malicious user with ability to load data into ClickHouse server could crash the ClickHouse server by inserting a malformed CapnProto object...

Fixed in ClickHouse v24.1, 2024-01-30​

When toggling between user roles while using ClickHouse with query cache enabled, there is a risk of obtaining inaccurate data. ClickHouse advises users with vulnerable versions of ClickHouse not to use the query cache when their application dynamically switches between various roles...

Fixed in ClickHouse v23.10.5.20, 2023-11-26​

A heap buffer overflow vulnerability affecting the native interface running by default on port 9000/tcp. An attacker, by triggering a bug in the T64 compression codec, can cause the ClickHouse server process to crash. This vulnerability can be exploited without the need to authenticate...

Fixed in ClickHouse Release 1.1.54131, 2017-01-10 

Incorrect configuration in deb package could lead to the unauthorized use of the database...

Fixed in ClickHouse Release 18.12.13, 2018-09-10 

Functions for loading CatBoost models allowed path traversal and reading arbitrary files through error messages...

Fixed in ClickHouse v25.1.5.5, 2025-01-05​

When the library bridge feature is enabled, the clickhouse-library-bridge exposes an HTTP API on localhost. This allows clickhouse-server to dynamically load a library from a specified path and execute it in an isolated process. Combined with the ClickHouse table engine functionality that permits...

Fixed in ClickHouse 21.10.2.15, 2021-10-18​

Heap buffer overflow in ClickHouse's LZ4 compression codec when parsing a malicious query. There is no verification that the copy operations in the LZ4::decompressImpl loop and especially the arbitrary copy operation wildCopyop, ip, copyend, don't exceed the destination buffer's limits...

Fixed in ClickHouse 21.4.3.21, 2021-04-12​

An attacker that has CREATE DICTIONARY privilege, can read arbitary file outside permitted directory...

Fixed in ClickHouse Release 1.1.54388, 2018-06-28​

"remote" table function allowed arbitrary symbols in "user", "password" and "defaultdatabase" fields which led to Cross Protocol Request Forgery Attacks...

Fixed in ClickHouse Release 1.1.54131, 2017-01-10​

Incorrect configuration in deb package could lead to the unauthorized use of the database...

Fixed in ClickHouse v24.5, 2024-06-01​

It is possible to redirect the execution flow of the ClickHouse server process from an unauthenticated vector by sending a specially crafted request to the ClickHouse server native interface. This redirection is limited to what is available within a 256-byte range of memory at the time of...

Fixed in ClickHouse Release 19.14.3.3, 2019-09-10​

Аn attacker that has write access to ZooKeeper and who can run a custom server available from the network where ClickHouse runs, can create a custom-built malicious server that will act as a ClickHouse replica and register it in ZooKeeper. When another replica will fetch data part from the...

Fixed in ClickHouse Release 18.12.13, 2018-09-10​

Functions for loading CatBoost models allowed path traversal and reading arbitrary files through error messages...

CVE-2025-1385

When the library bridge feature is enabled, the clickhouse-library-bridge exposes an HTTP API on localhost. This allows clickhouse-server to dynamically load a library from a specified path and execute it in an isolated process. Combined with the ClickHouse table engine functionality that permits...

Fixed in ClickHouse Release 19.13.6.1, 2019-09-20​

Table function url had the vulnerability allowed the attacker to inject arbitrary HTTP headers in the request...

Fixed in ClickHouse Release 18.10.3, 2018-08-13​

unixODBC allowed loading arbitrary shared objects from the file system which led to a Remote Code Execution vulnerability...

CVE-2018-14672

Functions for loading CatBoost models allowed path traversal and reading arbitrary files through error messages. Andrey Krasichkov of Yandex Information Security Team...

Fixed in ClickHouse Release 1.1.54390, 2018-07-06​

ClickHouse MySQL client had "LOAD DATA LOCAL INFILE" functionality enabled that allowed a malicious MySQL database read arbitrary files from the connected ClickHouse server...

CVE-2024-6873

It is possible to redirect the execution flow of the ClickHouse server process from an unauthenticated vector by sending a specially crafted request to the ClickHouse server native interface. This redirection is limited to what is available within a 256-byte range of memory at the time of...

CVE-2023-47118

A heap buffer overflow vulnerability affecting the native interface running by default on port 9000/tcp. An attacker, by triggering a bug in the T64 compression codec, can cause the ClickHouse server process to crash. This vulnerability can be exploited without the need to authenticate. Fix has...

CVE-2022-44010

A heap buffer overflow issue was discovered in ClickHouse server. An attacker could send a specially crafted HTTP request to the HTTP Endpoint listening on port 8123 by default, causing a heap-based buffer overflow that crashes the ClickHouse server process. This attack does not require...

CVE-2021-42389

Divide-by-zero in ClickHouse's Delta compression codec when parsing a malicious query. The first byte of the compressed buffer is used in a modulo operation without being checked for 0. JFrog Security Research Team...

CVE-2018-14670

Incorrect configuration in deb package could lead to the unauthorized use of the database. the UK's National Cyber Security Centre NCSC...

CVE-2023-48298

An integer underflow vulnerability in the FPC compressions codec. An attacker can use it to cause the ClickHouse server process to crash. This vulnerability can be exploited without the need to authenticate. Fix has been pushed to the following open-source versions: v23.10.4.25, v23.9.5.29,...

CVE-2021-42387

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...

CVE-2021-42391

Divide-by-zero in ClickHouse's Gorilla compression codec when parsing a malicious query. The first byte of the compressed buffer is used in a modulo operation without being checked for 0. JFrog Security Research Team...

CVE-2021-42388

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...

CVE-2021-42390

Divide-by-zero in ClickHouse's DeltaDouble compression codec when parsing a malicious query. The first byte of the compressed buffer is used in a modulo operation without being checked for 0. JFrog Security Research Team...

CVE-2021-25263

An attacker that has CREATE DICTIONARY privilege, can read arbitary file outside permitted directory. Fix has been pushed to versions 20.8.18.32-lts, 21.1.9.41-stable, 21.2.9.41-stable, 21.3.6.55-lts, 21.4.3.21-stable and later. Vyacheslav Egoshin...

CVE-2019-18657

Table function url had the vulnerability allowed the attacker to inject arbitrary HTTP headers in the request. Nikita Tikhomirov...

CVE-2019-15024

Аn attacker that has write access to ZooKeeper and who can run a custom server available from the network where ClickHouse runs, can create a custom-built malicious server that will act as a ClickHouse replica and register it in ZooKeeper. When another replica will fetch data part from the...

CVE-2018-14671

unixODBC allowed loading arbitrary shared objects from the file system which led to a Remote Code Execution vulnerability. Andrey Krasichkov and Evgeny Sidorov of Yandex Information Security Team...

CVE-2018-14669

ClickHouse MySQL client had "LOAD DATA LOCAL INFILE" functionality enabled that allowed a malicious MySQL database read arbitrary files from the connected ClickHouse server. Andrey Krasichkov and Evgeny Sidorov of Yandex Information Security Team...

CVE-2024-22412

When toggling between user roles while using ClickHouse with query cache enabled, there is a risk of obtaining inaccurate data. ClickHouse advises users with vulnerable versions of ClickHouse not to use the query cache when their application dynamically switches between various roles. Fix has bee...

CVE-2023-48704

A heap buffer overflow vulnerability affecting the native interface running by default on port 9000/tcp. An attacker, by triggering a bug in the Gorilla codec, can cause the ClickHouse server process to crash. This vulnerability can be exploited without the need to authenticate. Fix has been push...

CVE-2022-44011

A heap buffer overflow issue was discovered in ClickHouse server. A malicious user with ability to load data into ClickHouse server could crash the ClickHouse server by inserting a malformed CapnProto object. Fix has been pushed to version 22.9.1.2603, 22.8.2.11, 22.7.4.16, 22.6.6.16, 22.3.12.19...

CVE-2019-16536

Stack overflow leading to DoS can be triggered by a malicious authenticated client. Eldar Zaitov of Yandex Information Security Team...

CVE-2018-14668

"remote" table function allowed arbitrary symbols in "user", "password" and "defaultdatabase" fields which led to Cross Protocol Request Forgery Attacks. Andrey Krasichkov of Yandex Information Security Team...

CVE-2021-43304

Heap buffer overflow in ClickHouse's LZ4 compression codec when parsing a malicious query. There is no verification that the copy operations in the LZ4::decompressImpl loop and especially the arbitrary copy operation wildCopyop, ip, copyend , don't exceed the destination buffer's limits. JFrog...

CVE-2021-43305

Heap buffer overflow in ClickHouse's LZ4 compression codec when parsing a malicious query. There is no verification that the copy operations in the LZ4::decompressImpl loop and especially the arbitrary copy operation wildCopyop, ip, copyend , don't exceed the destination buffer's limits. This iss...

CVE-2019-16535

Аn OOB read, OOB write and integer underflow in decompression algorithms can be used to achieve RCE or DoS via native protocol. Eldar Zaitov of Yandex Information Security Team...