CVE-2021-42388: Out-of-bounds Read

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...

Yandex ClickHouse 缓冲区错误漏洞

Yandex ClickHouse is a set of open source columnar databases for online analytical processing from the Russian company Yandex. Yandex ClickHouse suffers from a buffer error vulnerability that stems from a heap out-of-bounds read in Clickhouse's LZ4 compression codec when parsing a malicious query...

CVE-2021-42389: Divide By Zero

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...

CVE-2021-43304: Heap-based Buffer Overflow

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 wildCopy op, ip, copyend, don’t exceed the destination buffer’s limits...

Yandex ClickHouse 缓冲区错误漏洞

Yandex ClickHouse is an open source columnar database for online analytical processing from the Russian company Yandex. There is a security vulnerability in Yandex ClickHouse, there is no information about the vulnerability at the moment, please stay tuned to CNNVD or the vendor's announcement...

CVE-2021-43304

CVE-2021-43304 describes a heap-buffer overflow in ClickHouse’s LZ4 compression codec when parsing a malicious query. The root cause is the LZ4::decompressImpl loop, where the arbitrary copy operation wildCopy(op, ip, copy_end) can exceed the destination buffer’s bounds. This vulnerability is lin...

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-2021-42388

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...

Yandex ClickHouse 数字错误漏洞

Yandex ClickHouse is an open source columnar database for online analytical processing from the Russian company Yandex. There is a security vulnerability in Yandex ClickHouse, there is no information about the vulnerability at the moment, please stay tuned to CNNVD or the vendor's announcement...

CVE-2021-43305

Summary : CVEs 2021-43304 and 2021-43305 describe heap/ buffer issues in ClickHouse’s LZ4 compression codec during parsing of crafted queries, due to unsafe copy bounds in LZ4::decompressImpl and the wildCopy function. The connected documents confirm a related set of advisories and mitigations ac...

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 issu...

Yandex ClickHouse 数字错误漏洞

Yandex ClickHouse is a set of open source columnar databases for online analytical processing from the Russian company Yandex. A numeric error vulnerability exists in Yandex ClickHouse, no information about this vulnerability is available at this time, please stay tuned to CNNVD or vendor...

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...

CVE-2021-42387: Out-of-bounds Read

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

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...

CVE-2021-43305: Heap-based Buffer Overflow

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 wildCopy op, ip, copyend, don’t exceed the destination buffer’s limits. This iss...

CVE-2021-42390: Divide By Zero

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...

CVE-2021-42388

CVE-2021-42388 affects ClickHouse’s LZ4 compression codec. In LZ4::decompressImpl(), a 16-bit unsigned offset is read from the compressed data and later used to determine a copy length without lower-bound source checks, causing a heap out-of-bounds read. This could enable crashes or memory-access...

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...

Yandex ClickHouse 缓冲区错误漏洞

Yandex ClickHouse is an open source columnar database for online analytical processing from the Russian company Yandex. There is a security vulnerability in Yandex ClickHouse, there is no information about the vulnerability at the moment, please stay tuned to CNNVD or the vendor's announcement...